posting here cause....well. I feel its a stupid question that i should know...and to avoid the flames and get an answer..

Can i buy a TII diff, and bolt it on to an NA? Im going to be drifting but Feel its unsafe at the moment to weld a diff if im going to have my fiance learn clutch in it and use it when needed. Dont want her flying off an on-ramp in the rain or anything...or me. lol

 

No. You would need to either use the entire TII drivetrain, or have custom axle shafts and a custom driveshaft made.