The best factory head that never was

One of those heads,had a taller exhaust short side(big block),was referred as the" CHP head". About 67/68 .Ring any bells,69Cuda440?.

That 'CHP' has my head spinning...........:compress:

My father told me everyone was seeking out the 1963 300-J Heads from
1964 thru 1967, to convert their 1962 383/325 HP Mopars to the
383/343 HP Dual-Quad combination.

Those Cylinder Heads became pretty scarce by late-1967.