yamaha 701 in 550 hull

i've got a few xtra hulls laying around, one a 93 550sx hull. due the the inability to find an fx1, i want to build something similar. as of now, i am extrememly motivated to put a 701 inside this hull. i have heard from another forum site, and google, that foximus built one. what do i need to do? obviously cut a new bed plate so it mounts up, but what about the pump? can i use a 550sx pump and prop it right? what about a 650 pump? also, would the exhaust fit? thanks in advance for the help
 
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