616-104-301-WR All New Cylinder Heads for 356 and 912 from Wilhoit Auto Restoration, Set of Two.

Finally, an improved cast reproduction of the factory type 616 cylinder head. No more fixing cracks and modifying 50+ year old heat cycled original heads that will probably just crack again.  Developed and produced by Willhoit Auto Restoration, these new castings solve the 356/912 cylinder head problem with a replacement that looks and performs better than the original. Price is per pair.  

For optimal flow and power, these use a different spark plug, a 12mm plug NGK D6EA (included) than the Factory heads.