Thanks Wyatt. Started reading your Build Thread last night. I'm fortunate to have a skilled ZHP wrench so close by. I'm looking forward to installing the ZHP engine from the wreck into my 2001 530i 5 speed. I couldn't sleep last night thinking how to get a header system to pass CA smog. I'm sure you and the guys in the mafia will help me solve that problem. Thanks again for your help. Gary