Just got a call from LA Sleeve. They have 30 standard pistons. They retail for $150. I'll let them go for $135 shipped to the lower 48. Get them while you can.
Now wait a minute, What size is P1 and what size is P2? I think I remember wossner making std, 72.25mm, 72.50mm, and a 73mm. Is p1 72.25 and P2 72.50mm?
Whatever the name on it, I need the 72.50mm piston.