sparty - i race a hawk gt in LRRS in new hampshire. in fact, a bunch of us hawk racers pit together, there are about 7 in the group. most of us run built-up 700cc motors, and chew on a lot of the SV650s.
can't recommend the hawk enough, particularly if you're new to racing - and i mean racing, not track-day riding, HUGE difference. plenty of parts on ebay, a fanatic following (hawkgtforum and turn1aracing), not to mention such a simple engine to wrench.
i trailer the bike up from NYC...about a 5hr hike.
unfortunately, the distance and work schedule limits me to only 4-5 race weekends per season.
not sure how far away you are in PA, but Loudon is a great technical track to learn on.
does this mean you'll be selling your CB??

i was contemplating getting another hawk for the street and build a hot engine.
but having seen your prior posts on your build, i'm thinking i need to give MRieck a call to work on my 77 cb750.
