Um, it doesn't sound completely hard to install the bushings into the brackets but i didn't have time or was I in the mood to be pounding the bushing in. But, I had the bushings that were full rubber in the middle but it was HD. You know what, I would go OEM as well, UNLESS the price difference is tremendous (like $100+) only because i did of course feel the difference with handling but that was only because my old assembly was going to fall apart. So what im saying is i dont think that the difference between the OEm and HD are much different, but maybe they last longer and don't wear out as fast.