the other day I noticed that I'm already splitting open the rear aftermarket foam bumpstops so I ordered and now have installed some poly ones. haven't gone for a ride yet to see how it feels but my Jeep just barely kisses the bumpstop at rest so this might be interesting. (partly due to weight and spring sag, partly due to the aftermarket stops being way taller than the factory ones) whatever happens, I'm certain it's better than the original springs/bumpstops since they were so bad I was sitting steel-on-steel at rest. lol