Hey blokes, maybe lady's swell.
I own a eb series 1 with the standard diff and I have bought a ED xr6 diff 3:45.
I'm talking brake to brake not just the center.
Now, I know that eb2-Ed are all interchangeable, what I need to know is if the eb1 is also a straigt swap, and if not what I'll need to change.
I'm thinking the trailing arm bushes are different as I remember having to buy Ea bushes for the lowers but I don't know what different that would make.
Thanks in advance!

I'd also like to know how people go about the speedo gear. I've heard both black and grey work, I'd like some conformation, running 18s with 235/40