hey, I broke my 5 speed borg warner gear box today stripped the gears its running in my 1973lj torana with a worked 202
what gear box should I replace this with so it doesn't happen again? im also thinking of changing the diff so I can get better top end the current diff gets very loud at about 140km and vibrates quite a bit. what gear box/diff combination should I get? the gear box must be manual. the car is owned by a 19yr boy so it does get thrashed so need strong parts
cheers blair