I had a hell of a time trying to fit the oem lemforder m3 rtabs into my housings for some reason, one just did not want to go in. Had the tool and everything, ended up bending the rod of the tool. So I gave up and ordered powerflex. Decently priced... same price or cheaper than oem+limiters, and honestly not harsh at all really. Rear end feels more planted, just make sure you grease em up alot. No squeaking or anything so far...