???? on a engine swap on a 87 dodge power wagon

I have a 87 power wagon w100 with a 318 2 barrel automatic trans 4X4.Runs good driver ok need to fix the bump steering also. First I would like to move up to a 440 or 440mag will I have to change trans on this upgrade for what parts are need for the upgrade also will my accs fit on the 440 with the 318 brackets or will that also have to be redone thanks for any advice
Author: tcobra29