what is the best overdrive transmission for a Duster

magnumdust said
My only problem is that a .80 overdrive is not a great ratio.

It's not a perfect option but better than 1:1. I don't think the gear vendor is a lot better. The 200R4 is probably going to be the easiest since OP is running a automatic. I just thought this might work and no major tunnel mods. :D