The Roadmaser Base Plate Kit part # 2301-1 that you referenced is the correct base plate kit for your 1992 Daihatsu Rocky. Any of the tow bars you referenced would come with the needed crossbar and quick-disconnects to attach to the kit.
We normally recommend the Falcon # RM-520 the most frequently as it's the most popular and works great. view full answer...
The base plates # 2301-1 for your 1990 Daihatsu Rocky are compatible with all Roadmaster tow bars. If you are looking for something inexpensive I recommend the Tracker # RM-020 which is a basic coupler style tow bar rated for 5,000 pounds. For something that will make hooking up easier I recommend the Falcon 2 # RM-520 rated for 6,000 pounds. I have linked videos on both tow bars for you.
I also recommend safety cables # RM-643. The coiled design helps keep the cables off of the ground.
For... view full answer...