Will try find pic of it, the Owner ( old guy ) developed the bike but it got to fast for him so he gets super bike racers to ride it in Classic races.
it is a one off He cast and made the cases from magnesium think it uses a Kawasaki 750 super bike gear box, it has PanHeads as they are ok for that class and lighter than the old cast iron owner welded & machined chamber i think its a 30 degree chamber has two carbs like xr750 owner made the cam master & had cam manufacturer out here ( Australia ) make the cams. just looks like an old Sportster with twin carbs. years back when owner first took the bike to race classic bike, most people raced Brit bikes like Nortons & Triumphs & some Vincents they laughed when a Harley Sportster showed up that was 20 or 30 years back but they don't laugh at it now, see how fast it pass's them, gets to 175mph on that track in a race. but would never see much about the owner or the bike online.
you can see the bike in this link, remember it has pan heads you can see the pan rocker box's also uses two front heads so exhaust intake exhaust intake rear pipe comes out between barrels has carb for each cylinder, i think it uses old Amal carbs, it uses old british bike drum brakes , all to do with class rules has to be old. but it works. http://www.camerondonald.com/trease-...sland-classic/