Current car setup is stock LQ4/317 heads, pac 1218, ls6 cam. Billet 7875 .96ar T4 turbo, 4L80e, circle d 3600 triple disk, 9 inch with 3.25 gears, on only E85. I知 rebuilding the motor this winter and I知 unsure if I should go with -3.2cc flat tops or -11cc dished Wiseco pistons. I will be using LS9 headgaskets. No head work other than dual springs. I知 also thinking of doing a BTR stage 2 turbo cam 226/231 .605/.598 113+4. But I知 not sure if a stage 3 would be better? I知 also not sure if the 7875 will have too much back pressure on this motor and maybe I should move up to a pt88? Any help would be great