well, you should be able to hit 12's easily. however i dont think id go with a t3. make sure you get a very strong clutch. if it is slipping you wont have good times. my stage 3 kevlar clutch is burnt. when i take the motor out of my 84 ill take pics of the rainbow flywheel and the disc. the disc is black around the edges. lol. hopefully it wont take forever to get my settlement and ill be buying an aftermarket i/c to replace the trashed stock one and will go ahead and get a walbro and lexus afm to go with the 550's ive got. good luck with the swap. mine took a week.