As much as I like Dodges, I would only reccomend the older models with a manual trans, low miles, or fresh trans rebuild. Not a fan of the 46 or 47RE transmissions.
That said, you can find the 2nd Gen 1500 and 2500's with stick shift, which, IMO if you have a dedicated tow vehicle that does not have one of the newer "smart" 5 or 6 speed autos, get a stick shift, period.
GM, you can get the NV4500 trans in the 90's models 1500 through 3500 backed up by a 5.7 or a 7.4. Both very bulletproof combos if well maintained or not a ton of miles. Be ware that pre 93 I think, the 1500 stick shift GM's were a 1 piece aluminum light duty trans. I had one that I beat the tar out of for 200k mi without failure but they were known for issues.
In short, Dodge or GM with a 5 speed stick.