Im looking to upgrade the standard diff in my 2wd sapphire cosworth which is 550hp before it breaks. Got the option to buy a full supra diff setup including fitting kit and billet rear cover. The diff has been checked over by a local transmission company and given a clean bill of health.
my question is, is it worth getting it rebuilt with the wier upgrade kit or not? Its pretty expensive to get done and wanted to see if anyone has tried them with and without the kit and can offer an opinion?
Im just a bit concerned if it will spin one wheel only when on the power as im not sure how well the standard supra diffs lock up to aid traction .