I replaced the bushing in my 70 Chevelle and these fit right in and made a very noticable difference in my car's ride and handling.The main down side is none of the metal hardware is included with the A-body kit and you have to re-use your old shells, or go hunt down news stuff.I was able to media blast, phosphate and then paint most of my old bushings, and then fabricated new ones out of some conduit and washers to replace the two that were heavily corroded. I then bought all new bolts.The second downside is the way energy suspension just bags every kind of bushing possible in the kit so it will fit either the small shell, or big shell bushing cars so you end up with a bunch of stuff you don't need and are paying for.If I had to do it again I'd bought the poly kit that OPG offers that has all new hardware included, and I highly suggest that path for anyone who doesn't have the tools, or inclination, to save the old bushing shells.