I'm also interested in finding out what's involved. I just bought a very low mile 75 Pacer from the original owner. Car is in great original condition, and it drives so nice I want to drive it every day - keep the miles of my XK8. Problem is the 258 with 1 barrel carb barely gets up the hills. Trying to decide whether to build up a Jeep 4.0, or swap in a V8 (even a 401 if it would fit). Any and all info anyone has would be appreciated. You can e-mail me, or call me toll free at 800-274-5372 ext 8660. Thanks...