I am confused. Although the basket case that I bought to build my "GS" was a 1972, the engine that came with it more and more appears to be a 76 R75/6. I bought cylinder base gaskets for the rebuild but they appear to be too small in the bore. Now when relooking at the microfiches, it would appear the the gaskets are good only up to 1975 and that nothing is available after that date. Is there actually no base gasket used on the 1976.