If you have found your way here it's probably because you have an interest in the Honda 650cc RC31 Bros (Hawk GT in the USA).
These bikes were never officially imported into the UK but have a bit of a cult following, due largely to the Internet.

Read some more here
The plan and the parts
CBR900 rear shock modification
Rear shock conversion
Easy rear shock removal
Swingarm and spindle modifications
Single Seat Conversion
Various pics of different mods to my Bros
Scanned Images
A random collection of tips
Links to other web sites
The project begins