Do these baskets and hook thing look familiar? These were found together with the Silver B I picked up off the sidewalk. I'm inclined to just toss them, but thought I'd ask around in case they turned out to be useful.
The grates look like ordinary after market grill grates - though a good cleaning might make them useful if theyre heavy duty. The hanger piece looks like it could be an aftermarket manifold support hangar - but typically this is a this wire "S" hook. If you remove the valve cover and the manifold is not supported to the frame, that could be what it is there for. There should be a lip on the frame where the skinny end would hook on and the manifold would rest on the wider part of the hook. Keep in mind, I could be totally wrong as well . Good luck though!
I believe that style of manifold support goes with the older round style manifolds. The wire s hook supports seem to go with the newer square style manifolds.
Gerry