Swapping for an OD 904?

ArizonaKid said
Actually, I did mess up

In 1980, many rear drive Chrysler, Plymouth, and Dodge vehicles were given a wide-ratio version of the TorqueFlite, dropping down the first gear from 2.45:1 to 2.74:1. Second was moved from 1.45 to 1.54; third remained at 1.:1, reverse at 2.22:1. All Torqueflites adopted this gearset in 1981.

I was thinking of the wide band ratio.

All good. Go for it! I found an A999 which is basically a beefed up 904 with wide ratio gears. Never looked back, I did a non-lockup conversion a few months ago.

If that's the case it's a bolt-on deal, if you go with a lockup one, you will need to get a specific torque converter and they're not very cheap.