e brake questions

[84 K5 4x4]

i have a 14 boff out of a 77 2wd truck under my blazer. does anyone know if the existing ebrake cables will work or not

 

[randy88k5]

I have almost the same swap, axle was a 78, and I have an 88 Blazer.

And no, the cable and the anchor points for the rear portion of the cable needs to be modified.

 

[84 K5 4x4]

what all do you have to do to make them work