H, super H, 300, and 350 all interchange. M, super M, 400, 450, and 460 will not fit the former. Bolt holes in the pedestals won't match up. I don't know where you are, but if you're near N. Arkansas, I have a Norden wide front under my 300 that I'd love to swap for a narrow front pedestal. The wide front won't turn sharp enough for my vegetable work. If you're interested in swapping, shoot me a pm.
Mac