I never gave it much thought. I put in a Newport motor years ago. Recently a shop broke one end of the transmission/linkage so I ordered a new one and it fit. I only replaced the long linkage.
I have these pictures from my build, it looks like I too have the same as it is a 1 ton panel. Maybe I got it to work because I didn’t know any better. It is a fiddle and a pita to get it set up under the dash though.
The Newport motor is good in that it allows you to use the later spring loaded wiper blades, but it is just as slow as the vacuum mechanism. Awhile back I saw something about someone selling a modified Toyota wiper motor on e-bay for our trucks. I never looked into it, but I’d like to get a more robust motor.
