(B)they are mostly decorative (B/)

Mostly? I'd be careful here. (1)These are not valve covers and (2)suppose they are placed there for strength? Frankly I doubt if any one of us really knows and our opinions may prove costly.
Why not ask the manufacturer?


1953 Chevy 5-window 3100
In the Stovebolt Gallery
More pix on Picturetrail

Dave
Engine & Driveline Moderator

If you can't make seventy by an easy road, don't go. ~~ Mark Twain