Not at my house they aren't.
I have a closet full of NOS chrome plated ones in sealed boxes. The bad thing about these is they won't fit a Camaro or Nova with power brakes unless you severely modify them. If they are the plain stamped steel variety (non-chromed) I would say an even swap for a pair of real finned aluminum Motion covers would be more than fair.
[/ QUOTE ] If your running out of closet space you can send some stuff to me & i'll keep a hold on them for you.