piston dish that on the pistons i bought was exactly as you said cre, 3mm, just under 1/8th inch (if my math is correct...??). i do remember gauging the other pistons and they are just under 1/16th inch, prolly around 1.5mm. so ill have to figure out what the serial number is today. ill get one and post back soon.. im very curious about these two sets of pistons i have...might have to use them in another build if i can find a good block. high compression 7mge