I'm kinda sad that this post doesn't have much suggestions. But if you even know websites that sells these original 5-speed trannys please link it here!
Fact is that a dogleg 5 speed will be $250.00+, and a normal shift pattern A series 5 speeds are expensive, I had to buy a whole car to get one of them transmissions, the MG community is snagging the latter type up for there 5 speed conversions, they are kinda hard to find.
You can look into a more common 5 speed over there, and making an adapter plate to mount the transmission, but the starter mount is going to be the toughest thing to sort out.
I know the voices are not real, but they have some really good ideas.
1964 datsun NL320 build
1966 datsun 520KC ute build
1969 datsun 521KC diesel build
1962 Datsun U320
1963 datsun L320
1964 datsun NL320
1966 datsun 520KC UTE
1967 datsun roadster
1969 datsun 521KC diesel
1971 datsun 521 dually(work truck)
1980 datsun 720KC dually diesel
1947 chevy pickup(restored) Sold 4-4-2014
1976 leyland mini
They who can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.
Franklin's Contributions to the Conference on February 17 (III) Fri, Feb 17, 1775