I know that there was a dealer installed option that was an engine dress up kit that included a chrome air cleaner lid and chrome valve covers in 1968. My new/old Cougar has the chrome lid and chrome valve covers that have the Ford “Oval” and the word “Motorsports” stamped on them. Are these correct or should they have the “Powered by Ford” on them that I see on the big block cars? Mine has the J code 302 with the C4 tranny.
I believe what you have are Ford Motorsports over the counter items. Most likely purchased in the 80s and up.