I am about to fit an ed diff into an eb 1 body the control arms are different widths the ed are wider, would like to know if anyone knows the fix to get the control arms to fit.

get the eb2 style bush pressed into one end of each of your lower control arms (if your EB's bushes are good)

if the ED ones are good, get narrow bushes put in one end

Or make some spacers for the bush out of some metal tube, to go each side of the bush (over the bolt)