I have a 91 Fifth Ave with 3.3l (victim of the dreaded valve train pedestal break) and 4speed auto and would like to know if the 3.8l is a direct swap or would I need to swap out the computer also. I know the engines are identical externally so I know it will bolt in, but if I have a difficult time finding a good 3.3 I would like to upgrade for as little as possible. This car is going to be dead stock so I don't need anymore power than either of these engines provide...Also would like to know what years I can use for this swap. Thanks to all that reply........Goonior
05 Magnum RT
07 Sebring
91Fifth Avenue
79 Cordoba