You will want the LSD. The SC makes the front break loose pretty fast on mine. I just ordered a SPEC III clutch, DMD and Quaife from
www.spmotorsparts.com this morning. I wanted a flywheel too but ran out of money....
however if you just want a LSD, PM "Flechaautosports" on the CEG board, he has the cheapest price that I could find, but doesn't sell the clutch I wanted or a DMD