Cylinder heads refurbished with new valve adjustment for 302 1970-77, according to Ford L4 change.
See specifications according to the document below. The documents specify casting numbers and casting dates, etc.

The following parts are compatible for the 302 engine 1970-77 with these cylinder heads (standard components)
Rocker arm kit: #6564-181-1041.
Pushrod: #6565-192-1409.
Valve lifters: #6500-VL35.
Standard camshaft: #CS560. No performance camshafts, as the valve springs limit lift and the rocker studs also have restrictions.