Only issue I could see is that the Z leans to the passenger side and the reason I didnt consider the Z or L is that its around 37cm wide while the CA is 34cm and the A series around 32.5cm. The L has more chance of causing headaches due to its width.

What I like about the CA boxes is that the ratios are good while some Navarra boxes
are 3.85 or even worse. The CA donk is also an upgrade option later with stock input shaft put back in then all the work of fitting the box is complimentary :)

Also when the day comes that someone wants sequential shift action there is a kit from Japan that converts the 71C to sequential.