Its the headman b-body headers that work we've used them a few times in different cars/combos. They dont need that much dinging to fit we just have adummy engine block with n empty tranny bolted to it....just alot less weight and mock it up a few times to get the dings in the headers you want so they fit right. Ill post some pics of a 383/scamp we had if can find them Ive posted them before. Good luck
Jr.