ID these Survivor Big Block VAlve Covers ?????
 

NO Flat Rear Corner

Drivers Side has two wire holding clips on Inside Edge
Passenger Side has NO Wire Clips

GOOD Driver Quality

Drivers side is not 69 Chevelle.
Clips are wrong and no spring tab on rear plug wire stand.

I'm thinking full size. The arrangement of the wire holders and wire clips looks like my '66, except mine aren't chrome. Chrome would've been '67 up. No need for the brake booster flat corner on big cars.

Guessing the passenger side looks like it could have a few different applications, full size, Chevelle, etc. 1968 and up.

The driver side I would say 1967 full-size Chevy, both low horsepower.