I need to purchase a new carrier for the rear axle in my car. Its a 4-channel/series 10-bolt, all stock, 28 spline axles, 7.625" ring gear, 3.42 gear ratio. I'm looking to buy an aftermarket LSD carrier, the entire thing, not just the 'guts' (a-la powertrax etc). What would be a good brand to go with, also which style? Geared (like a torsen) or clutch (like stock) or a cone-type LSD unit?