I think it looks bitchen
It's got the same wheels as the third-gen VFR - which, while I do consider them some of the sexiest factory wheels to ever grace a Honda (very HRC-like), means that they use the same front rotors/calipers as the CBR1000F Hurricane and the ST1100.
The calipers are solid, generic, middle-of-the-road Nissin units that Honda used on a million bikes (as did Yamaha, IIRC), but the rotors are made of unobtanium, and the models listed above are the only cross-compatible parts. Ask me how I know...
I'd think that the builder could have selected a front wheel that took more common size/type rotors (ff vs. fixed), especially for a race machine - nit picky, maybe - but I've owned more than my fair share of dinosaurs and parts availability is like a small but annoying wound that festers and won't heal...
But FWIW, I think this one-off CB900F Bol d'Or below is hotter, just because the components are era-correct (complete with Comstar wheels and twin-piston calipers!) - vintage Bol d'Or racers are of a specific aesthetic design from a specific period, so it's easy to have a visual miss-match. And If I were going to mass-produce a Japanese factory "cafe", It'd have to be a Rickman or Dunstall repro instead of a Bol d'Or clone (no full fairings on an air-cooled multi for the street!), complete with era-correct design and aesthetics (tasty SOHC Rickman turbo below, that I've over-posted before

). Imagine how much fun SOHC air-cooled 4 would be with modern materials and machining - kind of like Triumph's revised Bonnies...
Thanks for bumping this thread, Karbon - you might like this site:
http://www.cb900f.nu/
But the OP bikes are far from ugly, whomever said that. If you want to see an ugly endurance racer, get a look at the Seeley below (last photo - it's actually Carpy's). There weren't many kits sold, even fewer complete bikes (IIRC), but they
were a hot ticket - so I don't think their looks played against them. I just couldn't imagine ever lusting over one...
I'll stop rambling now - I just sold my KZ650 because I have no free time anymore, so I've ceased my delusions of cafe-racer grandeur for awhile...
-Q!