I guess I need to hurry up and grab one.The TEXAS may be going out of production.
I bought a 3/8-24 to S)-239 adapter from DX Engineering to adapt one mount to whatever antenna I use at the time. I installed one K-400 mount on the rear of my truck and use the SO-239 mount for my 2m/70cm was antenna and when I switch to 6m or HF I use the adapter with it as they are 3/8-24. Best of both worlds. Some day I might install a second antenna but for now it works fine. The adapter is REALLY heavy so no worries with even large HF antennas