Sc300 Limited Slip Diff

[dcoydad]

I have a SC300 manual. It has an open differential with low gears. I found an Aristo LSD diff. Will it swap over to the SC300? What is the gear ratios on the Aristo's? Would i be stepping up to higher gears? Currently my car tacs at 3000rpm at 70mph. I am hoping to drop the rpms to around 2500rpm by getting a higher ratio. The car has a single turbo with lots of horse power so I am not worried about my hole shot. The LSD should help. Appreciate the help. Thanks