Have a set of new, special production, late '70's, Cobra Valve covers listed on E-Bay.
Special price for HiPo Exchange members - $175.00
These do not leak and no warpage.
For C6ZZKGT, OE, if your car rolled-off a LA line?
Very common dealer installed option or owner installed.
rick
PS Inventory reduction, or '67 ELKY bed cleaning.
Keeping a SCJ, another 'Stang and a 3rd Ford product, no need for 3-6 back-up engines, trans, etc.