I have owned multiple Jeep Wranglers, CJ7’s etc. over my time as Ham. I am not sure I even got an antenna mounted on the first CJ7? Just depended on the handheld most of the time. Oh and the handhelds were a bit bigger back then. There isn’t much metal in the roof (roll bars) so that does not act as any kind of ground plane and I am not cutting a hole in the fiberglass to get it ripped out. Also, the antenna mount must be solid, out of the way, allow for entry into my garage (yea I store mine inside, don’t you?) and “WORK” with minimal SWR.
When I moved to the 99 wrangler I made a bracket to mount that
“And Now the Rest of the Story – “Jeep Wrangler and Ham radio