Outer Limits 4x4 Board

Have been told to use a 4 speed box from a gen2 lux to do transfer gears, but was wondering can I run a 5 speed transfer from a gen 3, as one is available and what mods need to be done to fit the 5 speed in.
Any help is much appreciated?

Also who sells the AA adaptors?

If your talking dual transfers then Marks sell the AA adaptor for 595 , thats effing cheap. You can use the 5speed transfer , if you get the shifter rod and fork for a 4 speed. Would be just as cheap to get another transfer.

John.