I have a 90 sp with a 580 motor and a round body 38mm carb the ski is in great shape motor was rebuilt just over a year ago. right now i have a chance to get a west coast pipe a stainless impeller and a performane intake grate and a performance nozzle, for free on another sp the motor needs rebuilt however the sp is included in the deal. however its a 91, should everything fit on mine? is there any way to interchange the carbs(squarebody)? i know i should upgrade to a bigger better seadoo however lets just say i cant afford a new one right now.