The Johnson 90hp v4 (1989 serial #TJ90TLCEM ) dropped a cylinder on my wife’s pontoon. Saw a local guy selling an all white bubble back exhaust Johnson 140 that is a v4 also. I’m waiting to hear back from him about the serial number. My question is, will that motor swap onto my leg? I know the water pump and lower unit is good on my set up so I’d like to swap powerheads if it’ll work. If it won’t work what will? Certain other 90s, a 115hp?