I think this is called the cylinder head. It is in new/reman condition.

Other MK1 parts available listed below.
original headlights (all 4 plus extra (generic branded) ones)
chrome side view mirrors $ (fits the 1979 model only)
front grill assembly
speed actuator
seat belt buckles
Windshield wiper motor
"B" pillar panel
rear seat arm rest panels

PM me if interested.
Nick