So is there any reason not to swap out the 5spd from my 89 mini truck v6 3.0 for the auto that came in the 89? I have a 4.7 Marlin behind my 5spd now and 4.1 in the diffs so I'm at 76 to 1. I'm thinking this can extend my ratio to near 100. I'm probably still going to add the Doubler eventually, which would get me to 173 to 1 plus whatever the auto adds. Thoughts?
Is the auto weak or will it hold up? And will the auto mate to the 4.7 marlin?