90 550 build

[BBYamaha]

I had a bone stock ski that I recently honed and re-ringed and put a high compression head on it (sitting at 185 now) then i got the urge to get a pipe, found a brand new factory half pipe for the piston port motor. Also found a sub plate? and a set of 0 degree bars for the little beasty. Also picked up a finger throttle for it as well. Next on the list is a prop... any ideas, was thinking a straight 16 I think its called... Also thought about boreing the nozzle a little does it really do any good? I know its a 550 but its my only backup ski incase the superjet acts up plus it has a totally different feel which is fun from time to time.

Any other fun mods to do while I am fixing the registration problem... It ran out and I need to go back home and renew it (600 miles away)