Just get an SR20DET or a CA18DET, the RB is going to cause you far more trouble in instalation than either of the above mentioned. Both are also far easier to aquire and are nice and compact(compared to the RB) so somewhat easier to work with once it's in the engine bay. The RB26DETT won't install, at least not with the AWD transmission (assuming you can't do crazy chassis adjustments..blah blah blah) but you could put it in using an RB25 or RB20 transmission(both RWD). You'll need some custom mounts, a little wireing work(haha, little) and a different intake plenum, because the stock one doesnt usually(key word here) fit properly, and it's just a bitch to work on. There's a site that will make all the things you need to do the install for a pretty reasonable price, I can't remember it right now but contact me if you care and I'll try and find it. All in all, an SR or CA will be better for drifting due the rough 80-120lb weight differences in the engines, not that it wouldn't be awesome. Up here near Seattle there's a guy who is linking a ps13 240SX coupe chassis to a R32GTR front clip. A skyline engine in a 240 will always be the dream...or just a skyline.