I have an NA 93 sc300 5spd and was wondering about possibly swappin from my 4.08 gear ratio to a 4.27 ratio while also adding an LSD in the process.

So would I just swap in a sc300 AT Pumpkin with the 4.27 gearing? Is it possible to add a supra LSD to the AT sc300 pumpkin and if so which one would I use?

Is the mod really worth the trouble? I have heard that it will improve acceleration but lower the top speed. but i don't really care about losing top speed.

Also how far off would my speedo be? I have 18's on the car right now if that matters.

Thanks.