Save your time, don't bother looking in Mexico.
First, all older cars there are BEAT to death. Then they fix them a bit to get them running and BEAT them to death again. Whereas here most cars are new because generally the average driver can afford to own a newer car. In Mexico, most cars are new because they DESTROY their cars really fast. I am convinced there is no translation into Spanish for the word \"maintenance\".
Second, of all the time I've spent driving around Mex, I can't recall ever seeing any double cabs or single cab Bay windows. I think the reason is because German vans were not imported to Mex, rather they were made there. And I will suggest VWoM probably didn't make SCs or DCs.