I had a RD400 that I painted and modded. Factory pipes, radial heads, boyesen reeds, clubman bars, dual drilled rotors on the front, drilled rotor on the rear, Fox rear shocks, rearsets and a chrome Cal-Fab deep braced swingarm.
Thing was brutal fast in a straight line and would loft the front wheel at will.
Lost all the pics I had of the bike. Moved on to a RZ350 Kenny Roberts after I got rid of the RD.
Been kicking myself since I parted with mine back in 81. Moved on to Gpz's.
Saw this little jewel on Ebay and said why not. One owner bike with 7k original miles. Sat for 30 years after a little mishap. I've got her down to bare frame and am bringing her back to like new.