Yesterday I made it a quarter mile through the no wake area and when I opened it up, my Ford 5.0 OMC 's crank broke. So I packed it up and drove 6 hrs home. How difficult would it be to convert it to a 5.7 if I bought the entire boat and did a change. Either way I going to miss this season of salmon fishing but it would be easier getting parts for a Chevy block. Here's more details. It is a OMC IO outdrive. I was going to buy a chevy engine with an OMC outdrive for the swap. I just need to know if the mounting to the transom bracket is the same. The wiring will connect I was told by a boat dealer.