A wide-open question I realize, but I'll narrow it down. I'm looking at an older Robalo 22 with a worn-out OMC I/O setup. I have the choice of repowering the whole thing with any brand of remanufactured motor and lower unit, or, rebuilding the transom and putting a 200 hp Yamaha OB on it that I have. (Why am I doing this....? I like the hull.)<br /><br />What little understanding I have of I/O's is that they are cheaper on gas and cheaper to replace motors. What kind of ballpark figure would it take to repower this boat with an I/O? With the money I've got into the Yamaha and the cost of rebuilding the transom I'm looking at $4k, even doing the work myself. What will $4k get me with a remanufactured I/O power train? Thanks......Ed.