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  |_ Guideplates->
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  |_ Valve Springs->
    |_ Brodix Valve Springs
    |_ Comp Cams Springs
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    |_ Lunati Valve Springs
    |_ Manley Valve Springs
    |_ Mopar Performance Valve Springs
    |_ Pioneer Valve Springs
    |_ Sealed Power Springs
    |_ World Valve Springs
  |_ Valves->
Viper
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Customers

Darren B.

Darren B.

John,Racing flat out on the 440/533 engine over 1 season & 65 passes at 8.97@150mph 1.27 60' getting great results!!Engine is GREAT!Thanks mate!
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Kris L.

John, Sitting in the car with a big smile on my face. Thanks for the quality brand products and the great price. Cheers Kris
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Jim W.

Jim W.

Thanks for the fast parts service and Great cylinder head porting! Jim
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Steve B.

Steve B.

Thanks for the help with my 426 stroker.
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Michael W.

Michael W.

After getting all the compatible stuff shes a beast! Michael
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Buyer

Super guy to deal with! GREAT SERVICE!! GREAT PRICE!!
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Benny C.

Benny C.

Thanks for the Great Mopar Service !
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Shaine D.

Wow! Thank you for that quick and informative response. Must be why you are always recommended. Shaine
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Bruce P.

Bruce P.

You’ve got a big fan in me. Oh yeah, the car is awesome. Runs like a raped ape. So thanks a lot !
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Robert M.

John, Thank you for all you have done, From your previous email responses, you seem to be old school, a man of his word. Thanks again John for...
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Steve V.

Steve V.

You are the only guy who I trust to do the most important thing I'll ever do to my Roadrunner, a car that means more to me than any inanimate object...
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James G.

James G.

5.80 in 1/4 mile @ 244 mph & 3.76 @ 197 in the 1/8 mile
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Ricky J.

Thanks for all the info, you have been a great help and a credit to your company.
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Brian C.

Brian C.

I have never had any problems with John on any transaction. One of the few vendors I have never had a single problem with. Including paying overnight...
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Billy W.

Billy W.

Dakota R/T 408
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David A.

David A.

Thanks for everything, David
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Craig W.

Craig W.

Thanks John, So far 8 races and 8 top Five!!
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Bruce P.

Bruce P.

John, you have been so prompt and helpful. Take care my friend and thanks again. I'll be back. Bruce
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Scot C.

Scot C.

Thanks for everything John. We will be doing business again. At Nationals 6.38 on a 6.54 dial in.
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Harold R.

John, Thanks for the great customer service! Harold
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Hannu O.

Hannu O.

thank you very much from Finland!
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Ian A.

Ian A.

I wanted to thank you for all your help and support, for being so patient and for being a good, honest person and especially so professional....
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Henry T.

Henry T.

HEY! Everything is installed and car runs AWESOME! Thanks for everything, Thanks again. Henry 2000 Dodge Viper R/T 10
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Chris B.

Chris B. won the late model feature easily Texas Motor Speedway.
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Maurice

Maurice

Maurice 73 Dodge Dart
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World Performance Valve Springs

Valve springs are one of the most critical and overlooked components in your engine. They must be matched to your cam in order for the engine to reach its full potential. It does absolutely no good to install a cam that will rpm to 8,000 if you do not have the correct springs. Use only the valve springs that will give the recommended spring pressure with the valve both on the seat and at maximum lift. These World Products replacement valve springs are offered in single and dual styles to meet their cam requirements.



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