If you are thinking of mounting a piece of rack-mounted Collins equipment into your station rack... I have a near-basket case 75A-1 that I wanted to store in an empty space in one of my 6' racks. I sold the original Collins cabinet because it was too bulky and heavy, and I don't feel like trying to get the rcvr running any time soon, even though it should still be restorable. Turns out the damned thing is just a hair too wide to fit into any of my standard open-frame relay racks. It would slip into a Bud cabinet in my shack, but that one is already filled. Apparently, Collins didn't care whether or not their gear would fit into anything other than the rack or cabinet they sold to go with their equipment (or perhaps it was intentional). Maybe that's why empty Collins rack cabinets fetch as much money as they do. The A-1 would probably fit if the side braces were removed, but the chassis is way too flimsy for that, so for now it's sitting on top of one of my shelves. If anyone has a use of the thing and would like to restore it or just to use for spare parts, let me know. I would trade or sell it cheap (preferably trade), but it will have to be pick-up only. I won't try to pack and ship it; not worth it to me. It sat on my table a couple of years ago at Dayton for both days, no takers.