4wd/awd conversion

hey, new to the site. i have a 99 g20t i've had since college and am on the list for a new gtr, so my g20 is gonna become a toy to just mess with. i am trying to find out if anyone has heard or done a 4wd/awd conversion to the g20. i am going to put a turbo on it, albit a modest one. i am only looking to get about 400hp at ATF out of it, but that isn't set in concrete. needless to say, i don't wanna fight that torque steer. i want it to be more of usable track car. i would use the tranny and as well as the rest of the drivetrain as i will also be doing a switch to a manual at the same time for ease. is the system from a primera a pretty much a direct swap, say if i were staying fwd? if so only some "tweaking" would be necessary for the 4wd drive, right? any help anybody can give me would be great.