John is a real awesome guy. i couldn't thank u enough for all the help over 7-8 years.
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The 408 engine runs strong, put on dyno 405hp with 415tq N/A not shabby.. also was on 22" wheels with those numbers est. 500-525 @ crank. Thanks so...
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Great Personalized service. Derek
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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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Chris B. won the late model feature easily Texas Motor Speedway.
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Thanks for the fast parts service and Great cylinder head porting! Jim
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Your 408 runs like a dream. I think we are well over the 400hp side, a new 300hp mustang could not overcome, it is a beast. I am very happy with the...
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Thanks for everything John. We will be doing business again. At Nationals 6.38 on a 6.54 dial in.
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Southeastern Performance has my vote. Thanks again!
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John, I am very pleased with the brake conversion. The kit was very easy to install and I didn't have any problems and look very good as...
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You do outstanding work man. My whole crew is ready to see your work in action ;-)
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Southeast Performance and John Mercedes have been "OUTSTANDING" to do business with. I couldn't be happier.
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Thanks for the brake lines !
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you come highly recommended to me by Finnish racers!
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John, Thanks for the great customer service! Harold
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John, you have been so prompt and helpful. Take care my friend and thanks again. I'll be back. Bruce
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Thanks for all, Your shop is very highly recommended by a lot of Dakota/Durango owners up here in Canada.
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426 Hemi Cuda
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"Johns the man, bought a 410 package from him years ago after I got back from overseas. The caveat I gave John was that it had to pass Californian...
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Thanks John, 426 Hemi stroker 588 https://www.youtube.com/watch?v=1dJdt0ZFzjU
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I just want to say thanks for all that you have done for me, because over the weekend I was the fastest R/T out there with no power-adders and still...
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bought numerous things and all transactions went very smooth. Responded to emails within a day or less. Ryan
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Thanks for your exemplary service. Keep doing what you're doing. Daniel C.
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Thanks for the help with my 426 stroker.
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John!! Got my Viper back together, dyno tuned. Super happy with the results of your work!! Gained 112 RWHP and 107RWTQ!!!!! More at the crank. Sounds...
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