it can happen, but wont be an easy job, you may ruin the car during the process.
heavily advised against. there are aftermarekt swap kits made in the U.S for 2jz swaps, they cost around 2000-2500 USD and i think they enable a direct swap..not sure fi theyre avaialble for rx8s... if you can get a hold to that then youre in luck...for traction there are many things you can do so you dont really have to worry about that. the thing is, generally when you throw around traction, ppl are stupid enough to think that youre gonna keep your stock suspensiona and other related parts, well im sure if you can swap in a 2jz, you can also throw in race suspension and other traction related parts, perhaps some monster tyres so you dont keep spinning. i mean, even supras have traction issues, that doesnt mean they dont run