I refer you to Mike's first statement:
http://68kmla.org/forums/viewtopic.php?p=40993#40993
Seriously thought, I don't think a Mac should be destroyed just for parts. There's value in every old Mac, most of which have already found their way to the landfills. BUT, case-in-point ... I actually bought an LC 575 for the express purpose of upgrading my Color Classic. So now I had a Color Classic board with no home. So I put it in the 575 case and it works just fine. No Macs were harmed in the making of this Mystic. However, as indicated in the crushed 550 thread, my 575 arrived with a dented foot and a cracked monitor bezel despite being relatively well packed.
Perhaps I can find someone who loves those old cases as much as I love my CC and will take it off my hands.