Remco can give you an answer once you know which truck you are interested in.
The Ford Ranger STRAIGHT DRIVE can be towed four wheel down from about year 96 up. I can not remember, but I asked Remco before buying. Mine is an 03 and towes fine.
I wanted a Cheverolet and asked the dealer who said yes a straight drive could be towed. Remco said no, I would have to add a transmission pump.
My next purchase will be an automatic even if I have to put a drive shaft disconnect.
Pick out your truck and give Remco a call before buying would be my advice.
2005 Damon Challenger 371