does anyone make a twin stick for a np 231?

I don't think you can twin-stick a chaindrive case

well, no, but there is a 2-LO (RWD) kit for them.

well, no, but there is a 2-LO (RWD) kit for them.
that's the best you can get with the 231. obviously, there is also a 4:1 kit for it. I discoverd however, that it was cheaper to buy a Dana 300 and the 4:1 gears for it (Lomax has a good sale going on) than it was to just buy the 4:1 gears for a 231.