Not sure what the superhawk is, but the US version of the 600 HORNET is the 599 available in model years 04 and 06. This is basically a naked detuned CBR 600. I love mine, but be careful it's fast. Avg 49 mpg.I am seriously considering the Super Hawk - 600cc, and appears to be the US version of the Brit's beloved Honda 600 Hornet.
Newer Honda Nighthawks
Familiarity breeds contempt.
2004 Honda 599
2004 Honda 599