Click on an image to see a larger picture:  
Suzuki GS550/750

Cylinder Head - With valves £45
Cylinder Head - no valves £30

Sump £15 Many more parts available for GS550 - Ask if I have what you need.
GS550 Lowrider (soft tail) £500
Carbset £30 Swing Arm £20 Barrels £20 Swing Arm - GS750 £20
Suzuki GP100

Also:

Complete GP100 frame £30

Engine £30 (needs big/small end)

Clock set £15 Forks £20 Exhaust - no baffle £20