So he we be better off selling the X block and starting over with a production block? I hope he doesn’t do that. So far, all I see that needs to be changed is the cam and pistons and rods. I would probably throw a 4 or 4.125 crank in it while I was in there and run it. My quick calculation on cost to do the crank kit is 2300 dollars. That takes care of the pistons and all of that. A cam is 400 or 500 dollars. I figure 300 dollars to balance the crank. That’s under 3500 dollars and he keeps the X block and the heads and valve gear. It’s pretty hard to replace that stuff.