Piston pin hight, piston ratio is also different than the 3TC pistons. I've also been looking into this cause I don't want to get forged pistons but I want to use hypereutic (sp?) pistons.
Email me, I think I might be able to help you out on the piston specs. I've found some 89MM VG30 pistons, but they are too costly for me $1500+
