5 Speed gearbox or a Lower Ratio Diff??

[HK1837]

I'd change it to a trimatic and 2.6:1 diff. Celica and Supra boxes are OK behind a 253 but you will still bust them towing. If you want to tow use an auto, nothing better. Just use good fluid and a big cooler. You may have a 3.36 too, just depends upon tyre size.

[Cyclamin]

Thanks , have to say i love the manual and would not like to go to an auto. (My daily drivers are autos). Did not consider the tyres though. It has the GTS rims and tyres look fairly standard , could you put a bigger rim and tyre on it (keeping the profile the same) or am i really starting to stuff it up , guessing i would/should change the front wheels/tyres as well.