Since I was going to be repacking the bearings on my Delta 321BH, I figured I'd upgrade to cre3000 and heavy duty shackles. My loaded weight is almost 10K so this seemed like a low cost and worthwhile upgrade. I was surprised at how easy it turned out to be, even doing it solo (3 bottle jacks and jack stands help). While on a shakedown drive, I'm not sure if it's a placebo effect, it felt quite a bit smoother. I didn't notice road bumps being translated to the truck as much. Also when I removed the old bushings, several were already worn through. I'm surprised they don't last longer.
