That machine should do around 40-45 mph depending on the motor condition and compression.THere arent alot of performance parts for those machines but you can get some.The best way to get your pwc to go faster is to put in a bigger motor...i just put a 717cc in a 92 spx that had a 580 and now it hauls..lmao...but for 800 bucks i would buy it as long as it runs..
I have a 94 SPi that runs 47...its for sale too so if you want a twin to go with that one, let me know. Has rebuilt carbs and new fuel sending unit...runs great, more reliable than my newer ones, also looks great. $1500 firm. Thanks-Phil
Oh..and as for fun...HELL YEA!!! The kids call this one "Jumper" man it just leaps out of the water, does 360's better than anything out there, alot of fun.