Bill O'neal is Watercraft Magic, at 1 time he had multiple doos on the World Tour so lots of experience. Mandriva, I think you posted on race.jetski years ago when you were 1st tuning your 787, if you remember a guy with the nic Mr HPT. that was the forum. You want to wake up that 787 you have all the stuff except 46mm spigot mount Buckshot carbs, not mounted shaft to shaft, and open case ports 4 deg of rotary valve rotation (2 before open and 2 after closing) and mod a smaller rotary valve cut-out to retain OEM duration (= to 4 stroke high lift cam) so the narrow component in intake tract is the carb venturi (to have what's referred to as "a good signal" to the carb that solves the problem of having carbs larger than the case ports area), you have a MSD Enhancer? You can program timing curve with advanced timing low to mid for insane acceleration and retard timing at the top to get back RPM lost from higher compression, best of both worlds. I can help you if needed. Lee