FX-1 Fx1 144 pump questions

i have a few questions about the pump swap that i dont seem to find answers for. Im sure many people have these same questions so im lookin for answers from the guys who have done it.

do you take the fx1 drive shaft and bearings out of the 122 pump and put them in the 144 pump? whats the difference between the superjet driveshaft and the fx1 shaft besides length? I have a pump from a 92 650 waverunner will the impeller work on the fx1 driveshaft? If not which impellers work on the shaft? pretty much im lookin for answers about the fx1 driveshaft and what you need to put it in the 144 pump? Im sure i would figure it out but im lookin for some answers before i start tearing things apart. thanks
 
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