I have been racing my modified 750cc Hawk GT at many events including AMA, WERA and AHRMA.
Almost alll aspects of the Hawk GT were modified. This included changes to the valve train, frame, pistons, cylinder head, suspension, crankshaft, drive train, exhaust as well as the fabrication of the fiberglass body and carbon fiber tank.
Here is the bike at the 1997 AHRMA National Race at Willow Springs.
PS, I won the race!