I have a 1968 Olds Cutlass Convertible and want to convert to disc brakes from drum. Will the set up off my 1969 El Camino work? if so, is it just a knuckle change out? will the booster work also? any input and advice is appreciated

 

I think it will all cross over. I did a 69 Cutlass to a 68 Cutlass years ago and I'm pretty sure we swapped spindles, master, booster, and prop valve. I remember making new rear lines, but don't remember why.