question on A=3

I know the B-3 have a two speed rear end. but on my A-3 has a lever going down to the transmission on the stick shift does it have a high and low or what is it?

Possibly could be a reverse lockout. If it is and if its functioning you have to pull on it to place the transmission into reverse.

A lot of times they're stuck.
It just so you can't engage reverse without moving the lever.