I have done some stuff with wbber racing and they have so far been very good to deal with over the last 2 years. I have used a number of their heads / intake combos. Thye have work on a couple of the TSM cars I know of and quite a bit of stage II stuff. They are good and reliable. They are not the quickest but then again no buick setup should be. Contact Bryan there and tell him Jim Pliss sent you. It has been awhile since I have talked to him as I have not needed anything lately. I need to go up there and say hi to him this weekend.