I just thought I'd share something I found at www.autopartsgiant.com . I'm going to go out on a limb here and state absolutely that this thermostat housing was only used on V8 hbodies. At least I've never seen it on any other vehicle and I've looked. For those of you looking for a housing with the correct angle for the factory hose and smog bosses, here you go. A V8 hbody reproduction part.
http://catservices.wrencheadpro.com/smartpages/partinfo_resize/FSE/84870.jpg