hi i have a 1990 LS400/Celsior and i am getting sick of the one wheel spinner and looking at installing a torsen diff.. my question is what torsen diff to be exact bolts strait in. ive read plenty of threads regarding the sc400 having no worrys with a replacement out of a supra bolting strait in... but whats available for the ls400/celsior.... or does the diff dentre need to be replaced (hope not)