There is a piston out there that is made like that Pretty sure it was a vitos, or wossner, a few guys have ran them with great results. Thing is, ya have to check the cylinder reports of it spinning inside the aluminum cast.
Okay so I'm leaving here in about 30 minutes to go get it. I got a late start. My grandma passed late last night and couldnt go early. I should be back around 630 with pics!