Nope, can't use V3 mats on V2 and can't use V2 mats on V3. Entirely different mapping scheme. Take a look at a V3 and a V2 map in a imaging program. You'll see how different they are. I think DAZ has a program that will convert one to the other though. However V3, M3, David, Stephanie Petite, Luke, Laura and the new kids mats are all interchangaable. We were dicussing that a while back.