1972 A Arms and rear differential questions.

[134tessier]

Hello, I have a stock 68 C10 with a 3" and 5" lowering springs. I recently picked up some parts off of craigslist. I have a couple of questions if you could help me out. First, the rear axle that is 5 lug with leaf springs was among the parts. Will the axles fit in my rear axle with coil springs. I would like to convert to five lug. Secondly, a set of upper and lower A arms with disk brakes was also among the parts. Will the spindles directly fit my arms on my truck? I really hope it is that easy and would appreciate as much help as possible. Thank you in advance.