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To be honest, proximity to a track is no indicator of quality. I wouold suggest you ask some local guys who they have had good results from. Also, if you go in and "sound like you know what you're talking about" you are looking to make a very irritated machinist....lol. Go buy a copy of any "how to build mopar engines" books. They may not have every answer, but they sure can explain a lot. If you know very little, learing is the first step. It sure saves money later...