Old's take it to Mendello in corona ca, his dad Joe was the king of old's motors, and if you can find a true joe Mendello motor, running they are worth big bucks. It's all in the oil mapping on those motors. But the cost a lot to build correctly, and if parts break, Chevys are cheaper to build, ford 460 great motors, cost is in between Chevy and old's for parts. I would stay away from a plan old's. Also Check engine hours, over 250 on a old's its time for rebuild.
Sent from my iPhone using SoCal Jet Boats