I affectionately call that the Doctor D replica/homage. (Dave's super sport is an 88 hp juggernaut so it's not a copy but inspiration. Note: my Nine Lives bike used the same style seat as Dave's bike (both fabricated by Ian Halcott) so I acknowledge the alluring aesthetic of the bike.)
http://www.twinlinemotorcycles.com/?p=1405 The paint scheme is pretty dead nuts on, save for actual tank emblems being used (where Dave used painted emblems).
Gritcity's version features impressive skills on the headlight bucket, sidecover and cowl/taillight. Note: the fiberglass and carbon fiber cowl/seat is different on this bike than the steel ones on my bike and Doctor D's PLUS a ginormous amount of BRAKE light coming from multiple LEDs. I don't think I have seen a garage built cowl/tail with this level of refinement. Gritcity should sell these things! It IS a tidy, looker of a bike.