Originally Posted by Graceland
......i can live with the lower gears been closer together aslong as 4th and 5th are the same - i'm 99% sure that 4th is 1:1 on both boxes, but i'm unsure about 5th and the other cogs.
any advice please?

My reference book is saying that Saph Cosworth 4x4 5th gear is 0.83.