I will be sitting down with my parts supplier to spec some custom B1 original pistons and I was wondering what others have bought previously.
Mine will be a 4.500" bore piston for 4.500" stroke (572 CID), with Koffel's B1 original heads with 2.30" dia intake valves and 1.78" dia exhaust valves.
Mine will be a flat top since my heads are milled to 60cc already.
I am planning 0.043" top and second rings; comments on 3/16 or 3mm oil ring?

What valve relief diameters and depths have you used?
Intake pocket dia:________Exhaust pocket dia:________
Intake pocket depth:______Exhaust pocket depth:______

Any other piston specs you can share would be good for comparison too.
What weight should I look for when ordering a 1.36" CH piston 4.500" dia? Lightening methods?
1) Mill under valve pocket area ?
2) Internal mill skirt area ?
3) Internal mill ring belt area ?