You should never use a stock exhaust gasket with any header. The metal reinforcement on the stock gasket will cause your header to leak. These special Performance Header Gaskets will work beautifully with any brand of header.
For non fuel injected, square "[ ]" exhaust port heads. Our 70-74 Headers already come with this gasket.
Datsun 240Z, 260Z
1970, 1971, 1972, 1973, 1974