Originally Posted by jdemetry
I think an aftermarket diff designed for yuor car's rearend is probably a lot less complex and less labor than fitting a diff not designed for your car's rear end. My 2 cents. I am waiting for a wavetrac LSD that I got for a good deal through a group buy. I expect the all in cost to be about $1800, including labor.
That would be true unless you have a welded ring gear like mine. Then it's probably cheaper going the m3 route. The only labor you'd have to pay for is the driveshaft cutting and balancing. I'm definetly going the m3 route when I come across the right deal!