And as for tunned 730hp supra, 413hp 240sx, 518hp mustang, 876hp vett (tubed track car) Numbers dont lie. They did my Z the first time true I have had some probs but A backwards hose here and a connector ther is not to bad. I would go to them agine just maybe with a supra insted for a Z you cant beat Balanced. And Enginered is a hack shop I know of six people that used them and all agree they not only did a bad job but ruined parts and in some cases whole motors you can tell them I said if they disagree.