'73 S engine case

#6331957, 7R case halves. This case has been bored for 90mm barrels and used standard bearings. I found 3 pulled head studs at #1 cylinder. The case is in excellent condition but would need to be time certed. It would be a great case for a '73 RS motor or can be resleeved to stock. The stock oil pump, intermediate shaft, through bolts, screen & cover are also included. I had the case cleaned and inspected by a local Porsche mechanic.

Listed on Ebay

Early twin-plug and ported cylinder heads

Heads have been bored for 90mm cylinders. Part # 911-104-306, 5 heads 11-70, 1 head 5-71. Uses 14mm top & bottom spark plugs, dual springs. Approx. port size is 41.5mm intake, 36mm exhaust.

Listed on ebay