Granted its a different setup but I put a Rough Country in to my old 86 XJ a few years back. It was a cheapy from JC Whitney, but, I was happy with the quailty of the product. I had the truck for 2 years and it didnt sag, even with all the abuse i gave it, so i guess they use decent quailty metal and manufacturing processes. The only thing i did trade up to was the Skyjacker Hydro shocks. What a difference. Also, before you comit to it, check out the JC whitney Catalogue, They have the YJ kit for $449 W/O shocks. And it does include:
4 spring packs with poly bushings
all u bolts
F&R
track bar relo's
Bump spacers
shims
T-case lower kit
Good luck.[addsig]