The car is a natural I/sa car add weight to J/sa lighten to H/sa hope this helps.. Also the guy from Ark. is Deano....as in Dean Oliver....yes he's good....I have a Danny Ashley on my car and it work great from as low as 2000 rpms. I don't have Danny's # at hand but can get it if ya need. Oh & listen to "The Don"! he knows his shxx! How many non turbo 301's have ya seen run low 13's? He & Billy don't have the bugs worked out yet either