people were telling you what may go wrong but you dismiss it as not relevant then quote figers which untill its done are but theoretical, i havent even mentioned the centre prop bearing, which i can tell you disintigrates with a manual box due to...
and the one thing you havent taken into account is the gear box, known to disintegrate on a whim, changing the diff will put more stress on it when pulling away
you should look at the gear ratios, in the 5 speed 4th is 1 to 1, in the 8 speed 7 is 1to1, the later box may have 8 gears but thats only to fil in the spaces between the 5 speed to make changing even smother, the manual 6th gear is a lower gear...
as someone who drasticly changed hes drive train (manual box) in a l322 i looked at changing diff ratios, but decided against it as too much work for little gain, several things came from it, the forum was split about doing it ( one member was...