Thanks Allen and Jim ,,, I guess i kinda knew the the answer to this before i posted but it was worth a shot !!!!!! I could,nt find out any thing up at the show at Indy .Guess i,ll keep the stock ones on the pontiac , but that oldsmobile ,thats a different story,,,, I,m gonna move on to stepped headers for now,Let me know if you guys hear any goob news.. Thanks
