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Well, they are the same rough parts, but not really near comparable to what we offer. Our heads will beat ANYONES hands down and are hand ported with EVERY cylinder flowed at least once until they are perfect! Our camshafts are also custom ground and are ground on billet cores. I believe they have off the shelf grinds that are regular steel.
It really all depends on what you are looking for. If you are looking for something with a little more performance, then most of the packages out there will be what you are looking for. If you are looking to get the most performance you can, I don't think these other guys hold a candle to us.
I know it is a pretty bold statement, but one I truly believe and and one our products have backed up time and time again! :yesnod: :yesnod: :yesnod:
I know on the C5 posts, these same tuners get a lot of attention and have a satisfied following. I am looking at a couple of these right now to tweak my car, signature says it all. More is close by for me, Vette Doctors, Cartek and Norris Motorsports have a strong following. The Texas tuners are a little to far away for me.:cry
Good luck to the C4 owners, I have been down the L98 route with an 87 Vert I used to own.