s51 trans. Options

[DaTerrorist]

recently my 96 celica st blew its motor due to the moron who owned it b4 not changing the oil for probably 90k miles -.-, so i figured a 3sgte swap would be ideal . got it all bolted in and wiring is about to be sent off to either tweak or 1 of the mr2 guys that does the same harness work for about the same price (cant remember his name off top of my head). Anyways i noticed the axles dont match up with the transmission i plan on running in it. If anyone who has done this swap could help it would be much appreciated. Heres wat ive got going on:

- 2nd gen 3sgte
- really late 80's 3s trans

ive searched and searched but could only come up with confusing answers. Ive gathered that the transmission is a s51 and yes it bolts up to the motor with any hassle, i know i need a clutch disc for that tran. with pressure plate and flywheel for the 3sgte (already taken care of). now i just need to know wtf to do about my axles

-This guy

[BonzaiCelica]

s51 has the longest gears out of the s53 and s54.

The S51 transmission is the weakest. the S54 I know has dual syncros on every gear or something to that effect. I saw this because I member here took out his 5th gear on the S54 and replaced it with a S51 5th gear. He noted that the 5th gear from the S51 only had one syncro.