I have a 94 e320 with no reverse due to a b2 piston problem , easy fix, but I recently bought a 97 c280. I was thinking about taking the 722.6 out of the c280 and putting in the e320 that has the 722.4 want to keep the 3.2 in it . will the engine control module from the c280 work in the e320 or will I have to keep the 2.8 mated to 722.6