Aermacchi -- Harley Davidson SS350 Sprint ridden by Dave Roper at OMRRA Vintage Daze, Portland International Raceway

This SS350 was raced by Dave Roper.  It started out as a stock SS350.  After lots and lots of modifications and fabrication it's putting out 40hp.  Check out the frame.

Not his best side.  The back side of Dave Roper getting ready to go out on the track.

Check out the head work.

Honda Rickman SOHC CB750 Road Racer at OMRRA Vintage Daze, Portland International Raceway

Parilla Road Racer at OMRRA Vintage Daze, Portland International Raceway

Velocette Road Racer at OMRRA Vintage Daze, Portland International Raceway

1950s Chevrolet Hauler and Honda CB160 Road Racer at OMRRA Vintage Daze, Portland International Raceway

A dump truck fell on the back of the car so the owner turned it into a truck for hauling his CB160.

Suzuki X6 Hustler Road Racer at OMRRA Vintage Daze, Portland International Raceway