picking up the NA rear end tomorrow night. I'm doing it more for HICAS elimination reasons, but I think the 4.10 rear end will help off the line. another benefit is clearing out the HICAS garbage under the hood...should clear up plenty of room for HKS DLI, or whatever else you might need room for.
while you have it out you should also put some aluminium or at least polyurethane subframe and differential carrier bushings in there. =)