J.M.
Hello.
If your BIL lives in Texas, chances are he is eligible for assistance through one of the many programs for handicap individuals--my oldest is on MDCP. Anyway, many of the programs offer funds (sometimes up to 10K) to help purchase adaptable equipment, including and not limited to, vans, lifts, ramps,etc. If they do have such a program, he may want to visit with his Director and let them know what he needs. Not sure if they can help with locating, but it would be worth a try.