Camry motor swaps

ok, as many of the camry owners know, camry's are a beast
! they are pretty damn fast for being old cars(well, mine is anyway... 1992) and its a 4cyl that gets 42mpg (ive done some minor mods here and there)... im even making an air ram for it... but, im getting tired of a dirty motor that has 300k and a bad tranny... the motor has never had any work done on it (besides usual maintenance), and i drive it like its a rwd drift and rally car... but, im tired of worrying the damn thing all of a sudden decides it wants to retire... i love the size, body and engine bay room it has, the v6 and 4cyl have the same chasis, so its a big bay for a 4cyl, and i have alot of room to work with... ive been looking around for a while, because my tax returns are gonna b pretty nice! i think ive fount a few possibility's for motors(and trannys), and i wanted to get some input on the difficulty and reliability of these... also, if anyone has a different motor they would like to suggest, please let me know.

motors:
3sgte (celica) TURBO for yrs 90-93
3sgte (mr2) TURBO for yrs 90-93
both of these motors are jdm motors, and yes i know about smog in california, but im not going to register it in california so its fine. Probably arizona, is where it will be registered. let me know guys, thanks!