The things we think of as valve covers on our 1500s are not that on the 1800.
The 1800 has two piece clamshell kind of things that cover spark plugs and stuff,
the center chromed strip is a plastic cover that hides how the rest of it
goes together...
I'd assume the clamshell parts could be chromed, and if the daddy goldwing
ever had chromed ones, they'd probably fit... the chrome ones from the
Rune seem very different though...

-Mike