Mike ,
I swapped in a GM corporate rear into my 53 3/4 ton many years ago but I honestly can not remember how I addressed the E B issue ...it seems to me that I hooked at least one of the new rear lines into the mechanical parts that came back from stock using the usual shade tree engineering but I am sure you could address this issue after your rear is in
I know it does not help today but I will try to look this weekend
Dan
