w50 way's 40kg's v t2 or t3 alloy case toyota 5 speed way's 26kg's..

Its not that they are to big but just needlessly big bulky and there would be a los in power due to friction, and a los in handeling due to weight

t50 will work just fine, I can tell ya its a hell of a lot lighter than a W58, and it can take a fair amount of punishment n/a, as my mates with 'rollas have proved. cheers

Check out the following site:
http://users.tpg.com.au/users/loats/technical/ma61/gearboxes.html

All the facts, very informative, no BS

ive got a w50 going behind my CA as they are the same length as a a series box (or stumpy). way overkill for an a series motor. these are the iron case celica box they used to use behind ford and holden sixes and holden v8's
they are a more compact case than a later alloy case box
mine weighs 43kg with bell housing and fork
thanks bones i'll be looking at that site
dazza