[TerryMason]

I had a YJ hardtop on my CJ for years and It fit fine. They are right about the tailgate though. The CJ tailgate opens like a pickup, and the YJ swings like a door. When using the YJ hardtop on a CJ, you'll have to open the back window of your hardtop before you can let the tailgate down.

I'm not sure if the reverse is true, and a YJ top will go on a CJ, but I'd bet it would.