I think it's time for you to stick a big block in an A-body. I think you won't be disappointed, in fact I know you won't.
4.10 gear with headers will be enough to bring a big smile on your face.
Yeah, I need to. I know folks that had them of course, I've rode in them, but I've not myself in a A-body. And, I'd expect a BB not to need 4.10's in a light car.