Dose anybody have and info bout making a 40 a 50 or 55hp I know the carbs and reed cages are different I'm not sure about the head or exhaust I put 50 hp jets and boysen reeds in it and I'm not sure if the jets hurt or helped me it's on a 1648 weldbuilt with a 4in jackplate just got it put together only had it out one time so not much testing time thanks for any info