I got my "208" piston yesterday, pin fit is good in both piston and rod. The rings are the wide pattern or old style. Ring groove clearance good. I will mock up case, rod piston and cam tonite, check the "in hole" and skirt clearance. If OK the rotating stuff and head are going to the machine shop for a balance and a shave.
Make sure you get the right rings.
Louie
Did you end up using your stock wristpin? I got my piston, the 2.756 Flat top, .570 Compression. I pulled the head and carb, haven't opened up the case yet to pull the crank, cam and rod. I like what you have found, its promising at least that I can get what I need if my piston doesn't work.
Can you explain why you chose the 208 over the one listed above, because of the larger wrist pin? Not questioning your purchase, rather questioning mine.