69 Front End Help

[robs_c10]

I have 69 C10 that I am currently working on and one thing I need and want to do is the drop spindle and 2" lowering spring. The truck has 6 lug disc brakes in the front already. My question is this. A freind of mine had a complete front end from his 63 that he is willing to give me. I am looking at possibly taking that front end apart (to keep my truck mobil) and cleaning it up and putting the aftermarket parts on it then just doing a quick change out and just add swap the disk brakes to this 63 front end. Is there a huge difference between the two? the only thing I know for difference is the control arm shafts have zirk fittings on the 63 and the 69 has bushings. I just want to know if it will be a headache for me or a relatively easy process to complete this. Thank you for your help in advance.