Engine has 30,000 miles since rebuild but has fresh rebuild on heads with hardened valves (large valve heads), blue thunder intake, new 3/4 cam, holley carb bored 30 over. Don't know if the truck crank and rods are a better option than what came in the Tbird motor? I was going to buy an intake, carb, better heads and rebuild the Tbird motor probably have to bore it 30 over at any rate so could scavange pistons. Parts alone have to be worth a grand.I assume there is some sort of date code on my Tbird block that would make it worth while using that block and just scavenging the parts?