Find some off the shelf affordable forged pistons. I'll wait right here.
The 413 was a great engine. It got left behind in popularity when the 440 was introduced. It has an oddball bore size. To get to a standard 383 bore size, you need to go .0625 over, as the 413 bore size is 4.1875. To get to the 440 bore size you need to go out .1325 over. Those are hefty cuts, plus, why other than piston availability would you go to the stock 383 size? "I guess" if you were stroking a 383, yes, but there's certainly no room for error or an over bore at .625 over from standard.
They were great as the MAX WEDGE. They have a fantastic history. But spend on a custom forged piston when you can stroke a 440 with off the shelf parts? Not in this lifetime.
