ok..here is some info...I just cut a full dish 292 piston in half.....
from top edge of piston to 'bottom"-what you see when u turn piston over and look into- measures approximately 7/8 of an inch-..3/8 of an inch (half) is from top of piston to inside of dish, 3/8 of an inch (half) is thickness of piston from bottom of dish to underside of dish...hope this makes sense
from top of piston to top ring land is approximately 7/16- almost a half inch!!!!!-THIS is where you can cut...top is VERY thick-
i will get back to you again....
