Instead of specifying "XJ" like we,ve been doing, I would probably specify "ZJ" instead (Grand Cherokee).
Skyjacker and Rancho specify the same 240lb coil for both vehicles, but it seems some others don't.
Sticking with ZJ might make for better consistency in finding coils that'll work well for our trucks (ZJs with the V8 are slightly heavier than any XJ, and would use heavier coils).