I guess I should start another thread for that. Just to clarify, I rebuilt the original, numbers matching engine, with the correct carb(for A/C), the distributor, and even the original manifolds. I want to run this old girl, so I shrink wrapped the rebuilt original engine, and tucked it into the corner of my climate controlled garage. Like every red blooded American on this site, I want to hear her sing a 6000 RPM through the pipes. That's why I got a 1998 5.9 magnum I'm making my 408 out of. Thanks to all for their sage advice.