Cool. If its a 3.9, I'll definitely take it as it'll save me making up a 4.3 I was planning on doing tonight for Sunday.

When your near it, could you check for me. Just count the number of turns the input shaft makes to one full turn of the output shafts.

It'll be 3.38, 3.45, 3.91, 4.1, 4.27 or 4.45.

More than likely it's a 3.38. Might take it either way as a spare anyway, just be handier if it was a short ratio to start with and save abit of time