Here in North Carolina there have been Binswanger Glass companies in Charlotte for many years. I bought insulated glass panels for my house in the 80's. Kinda became my default glass company - just because they always seemed to have or be willing to do what I needed done. About a year ago, I had two vehicle break-ins just acouple of months apart. A Suzuki lost the back glass. They brought the glass, vacuumed up the mess and reinstalled. An old Ford van (sorry, don't know what year) needed a drivers side door glass. They couldn't find it. Ford didn't sell it. Went to the local "pull your own part" place and removed a piece of glass. Called Binswanger again and asked if they could install my glass. No problem said the lady on the phone. She sent a guy who cleaned up the window that I supplied and installed it after vacuuming the old glass out of the bottom of the door. I remember that one cost me $80 and I was happy!
Might be worth seeing if they are in Texas...
Check around for custom rod shops. This can not be as difficult as it seems.