jdm S13 LSD

[daytrx]

I am ordering a used LSD from japan.
Whats the essential parts to get ?I need to cut down the weight factor.
the housing is not important, rite?

[GRiDRaceTech]

I am unsure of fitment, I'd recommend searching Zilvia, Club240 or Nico to make sure.
As for reducing weight, do not cut the housing. Do not even worry about the diff. It is sprung weight down low, thus it matters little in the scheme of things. If I were you I'd be more interested in reducing unsprung weight or weight above the center of gravity.