[4sd911]

http://forums.pelicanparts.com/911-engine-rebuilding-forum/521470-new-mahle-pistons-cylinders-2-7-a.html
http://forums.pelicanparts.com/911-engine-rebuilding-forum/490923-piston-rings-wrist-pin-rod-bush.html
I suspect that's what you will get from the rings.