Chrysler ram induction intake manifold

Can anybody tell me what years, vehicles and/or engines these intake manifolds were incorporated on?
Thanks.

Here's an excellent article that should bring everyone up to speed on these very unusual manifolds....
http://www.allpar.com/mopar/sonoramic.html

I had to put on my wading boots, but the info is there. They seem to be a little more rare than I originally suspected. I bet I could fab up some nice runners to holding a set of Weber DCOE's to each cylinder head **)