R65 gearbox has nice closish ratios, but the pg1 is stronger, plus im pretty sure the gearbox on the 160vvc's also had lsd's.
The box off the 160 has close ratios but no LSD as standard . The 1.8vvc out of a TF or a BRM Rover has LSD's i believe as standard. Although i saw someone selling gen rover LSD's for the pg1 box for about £150 the other week