There are two versions of stock for the narrow receiver, differing in the comb length. The early ones were 9.5", but yours should probably have the later (and scarcer) one with 10.25" comb. Barrel will be no problem, but neither stock is going to be easy, or cheap, to find. I'd not be too choosy as to which version, since in that range it could go either way - if you find a decent stock within your budget, go for it.

There is a difference in the barrel shank - yours is square, but any later round one will fit your receiver with no problem. The reverse would not be true, so you lucked out there.