Appreciate the responses.
I did order this antenna and am using it with a PoisonSpyder tailgate mount with a hardtop on the Jeep. The stickup above roof line as menstioned is about 18”. I did find that I needed to run a ground wire from the antenna base through the tailgate and attached to the floor of the Jeep to provide a strong and large horizontal ground plane. This allowed me to dial in an SWR of just over 1.2 from CH1-40.
Little bit of extra work but nice to be able to get in/out of the garage with trout having to remove the antenna.
Should mention that I do have it on Firestik’s quick disconnect.