Cannibal Garbage Men vs. Rat Zombies From Outer Space!

I'm telling you, THAT would make a cool game!!

I'm sure this is going to end up being a question that everyone but me knows the answer to, but where can I get the ROM files that go on the eproms in the various games for a Red Tent? I've found ROM files for MAME versions of the games, but I don't see how to figure out what files go on what eproms.

Also, are the CPU and PPU chips available for sale anywhere? I have a board, but need the requisite chips...

I'm mostly interested in Wrecking Crew.

Any help is appreciated!