Sounds like a good plan I have a 2006 RXT with a RIVA STAGE THREE perfomance package went from 215 HP to about 300 HP increased top end from 68 to 76 MPH. There are some things you may want to consider, RIVA ECU so it will let you enjoy that motor, the stock ones are speed restricted, plus you may have to get one any way for compatibility. Next a GEN 2 waterbox,a big sea strainer (GROCO), you may be able to use your stock prop. However you may need to change your nozzle ring,I'm running an 81 mm in my RXT and had to repitch my prop so I didn't hit the rev limiter 8650rpms. Each mm that you change pitch drops down the engine 250 rpms. This ski also has a RIVA pipe and thru hull exhaust. If they don't hear the pipe it makes for a good sleeper ski.any one out there I :dunno: if I would have any problems with using stock prop and pump with the 255 supercharged motor that I have in my 2003 gtx. the prop is not stock I no it is a solas but dont no the pich.