I know some of us like to score those recessed ignitions on e-bay that came on other than CB750's. It sure is a thrill to get a very valuable ignition for less than $20.00 once in a while. Beware of the CL175 recessed ignitions though as they are not the same as the ones we covet. I see one for sale on ebay right now and I asked about the housing on the back. Sure enough it is the plastic housing that I have seen once before luckily. If someone pays a hundred or two for that thing I bet they are going to be UPSET. I suppose if they can find the H code plug keys for it it'll pass off on a sandcast but I'd hate to be the one stuck with it.
Good luck scrounging, Chris.