No, you want to change from a four speed to a four speed OD. The Chrysler four speed OD transmissions still carry the A833 designation. That means they are a four speed, not a three speed. If it has four forward gear, it's a four speed. I never understood why people incorrectly call them 3 speed over drives. There were three speed over drives made, with ONLY three forward gears and high was OD. But the A833 tranmissions are ALL four speeds.
You will need a different bellhousing or you can have yours possibly machined to fit the larger 5.125"bearing retainer in the OD transmission.
