Ok so i read this up above in the swaps sticky : http://www.automotiveforums.com/vbulletin/showthread.php?t=19176
Can any one give me some more details on this, trying to find info on swaping the supra pistons talked about in there for a project a buddys working on he's using a b7 block with an ex built head.

Let's say you want something cheap but you could work on for possibly turbo or nitrous? The D16Y8 is cheap and the pistons are the exact size of TT Supra pistons. They could substitute for forged versions and work just as well for a turbo upgrade. Be warned though as the D16Y8 has a particularly bad Rod to Stroke ratio at 1.52. I also suggest the B15B7 which is the 5th gen. Dx and Lx engine pushing 102hp @ 5900 rpm and 98 lb.-ft of torque @ 5000 rpm.

... Why not just buy correct pistons?

Some JE Pistons and Eagle Rods aren't that expensive for D-Series engines, that's what I would do.

-Wes

B16a rods and jdm supra pistons (among other combos): http://www.knology.net/~jediklc/pistonnotes.htm
ZedEX's response is way better. Customs sh*t is way riskier (spelling?), than getting parts that are known to work together.

... Why not just buy correct pistons?

Some JE Pistons and Eagle Rods aren't that expensive for D-Series engines, that's what I would do.

-Wes
because of this quote "They could substitute for forged versions and work just as well for a turbo upgrade"

Well do what you want, it's your money. I was just throwing in my opinion.

-Wes