Porsche 928 S 1986 Driver Manual page 9

Chassis number
The chassis number is stamped on the top of
the right wheel arch in the engine compart-
ment and is visible through a cut-out in the
wing flange.
Engine number
The engine number is stamped on the front
reinforcing rib in the top half of the crankcase.
Paint number
The paint number plate is fixed on the left-hand
door lock pillar,
7