i think the term that should be used:
factory fitted, after market lsd, helical, mechanical
c58 final drive ratio is 3.9
c52/c56 FD is 4.3
never used c58 tho. sorry cant tell you any pro / cons
factory fitted, after market lsd, helical, mechanical
c58 final drive ratio is 3.9
c52/c56 FD is 4.3
never used c58 tho. sorry cant tell you any pro / cons