1973 340 budget build.

I want to build this engine myself, I want to and have a good Small Block Mopar book to follow but I've never build an engine before and Im wondering if its too much for me? Well, not since I was an Apprentice Mechanic but Ive been in the Oil Service Industry for the last 20 years.

This quote got me wondering;

Your machinist, more than likely stopped at .020 because he will want to custom fit each piston to each cylinder hole. This is a must do for forged slugs. My machinist will be super careful and do it with Hyper slugs as well.

If I buy .20 Forged Pistons then how does one custom fit each piston to each Cylinder Bore? If this is nessesery I think I might have to farm the work out again. :(