Technical Help identifying Model a Riley ? Finned covers

Hey all, can’t figure these out exactly..look possibly Riley related but not finding any to compare too. Thoughts? Thanks all !

 

Interesting/ I don't know if this helps.Here's a pic of my Riley 4 Port.

 

From ebay!

 

Maybe a Riley aftermarket speed part?

 

Not sure about the fins or who made em, but appear to be covers for a Riley 2 port head

 

Bump anyone need em? $100 ?

 

I'll be your huckleberry mate, if you would do $100 posted to Long Beach Ca 90813. Cheers David

 

Looks like they were cast in a high school metals cl*** in the 50's. Fins added to real Riley parts and used as a mould to cast those. We made gas pedals and shift knobs in cl*** when I was a kid.

 

he can almost walk them over!

 

Anyone have a source for the wing nuts? Castings or finished?
How about decals. If not available any interest in reproductions?