Well it's not that easy and not gonna quite be that fast. The 787's are stock bore but will have high compression, race fuel, fancy timing, and a probe on everything to help tune it just right. The Superstock has porting to the jugs and case.
I think about 65mph is the limit because if you gear it taller then your bottom end will suffer. The top speed X4 war is over since Bill Oneil went 81mph on Mel Miller's ski. For me, I still get that "giggle factor" every time I hit 60.
yes, exactly,, mid 60-s up to 67-68ish is pretty close to the max for your average guy, bill is in a world all by himself, for me... i'm very very happy with 60-61, but I get there VERY fast... (at least by MY standards)
with that said,,, getting to 60 with a properly set up 951 will make me look slow
getting to 60 with a big bore and somebody at some point will ask me if I have a 717 in there
because I don't even belong in the same race with a big bore, i'm in the kiddy pool !
Don't forget, the X4 hull is not designed as a speed ski, the wishbone hull is a better choice, and dam near every other hull that SD designed since then, the x4 is a jumper and always will be, going over 65 on the X4 IMO is a tad crazy.
but ya, i feel fast, but i'm just a pile of dog chit compared to the guys you mentioned above matt
and i've beenon JFF's ski, it actually is scary to ride, I was more than ready to get back on my little moped after 5 minutes on that beast.