Four Strokes???

[Tarpontim]

Any 18 or 20 owners out there that have repowered with a 175hp or 140hp four stroke Suzuki or 150 Yamaha ?? If so what is your top end and cruise speed?? Is the engine two heavy for the boat. I have raised my transom 5 inches on my 18 to help with the weight of my 200 Yamaha and she does fine. I'm not sure if I should go with the yamaha because I think I can use my 2005 Yamaha gauges?