440 or built 360 71 demon

dollar for dollar, a big block spanks a small block all day long on the street. other than some minor clearance issues , a big block is an easy swap.
transdapt mounts and hedman b-body headers will work.
Thanks, I have most of the parts around outer than the headers to fit with out cutting up fender well and still get to the starter so far found TTI 'pricey 'that supposedly fits well with auto trans but have to be modified for manual due to the z bar.
So you have used the headmens?