I talked to IMCA & they informed me that i cannot use a Mopar flange on those headers so I didn't even bother to call Schoenfeld. I called Summit & they informed me that I cannot refund my cam as it has been too long since purchasing, Maybe I can persuade them to let me exchange it expecially if I upgrade to a more expensive item. I'd like to go roller with all of the flat tappet hyd cam failures. OK so I need a different cam, can you give a suggested one or what numbers/specs should I be searching for, I'm a bit confused on this. thank you for your time. RR