I've currently got the Turbo 350 tranny mounted up to my 350R. I'm interested in having a manual instead though. What all options are there for me? Almost any 4 or 5 speed would be great, however I'm not sure if any have aluminum cases, but I'd stay away from those.

Didn't the 442 or something have a 4 speed manual it seems? I don't really know that much about Olds' but it seems like they did. If so, how hard would it be to swap one of those over?

Thanks in advance