Steve,
I'm share the opinion of 50-3600-Guy. I have yet to try and find anything for my trucks that won't at some point pop up on E-Bay.
You do have to be diligent, and patient. With enough of either, you'll find what you want, and generally at a price you can live with.
I don't know about the 3600 emblems, as all of mine are 1/2 tons, but $12-$14 seems to be about the going rate for half decent emblems on E-Bay.
They are out there.
