Axle swap.

[72timemachine]

I've a 1969 c10 6 lug rear end with 3:73 gears which I believe is an open carrier according to the stamping on the axle tube information I obtained from this site.

Is it possible to switch out the axles on this rear end over to 5 lug axles so I can get it to match my '72's front 5 lugs suspension? If this is a possibility there are trucks from other years I could use the 5 lug axles from or do I have to buy new ones. Also, if I can swap them, will the 6 lug backing plates match the 5 lug drums or is it time to buy a disc rear brake setup. I mean if I have to go through that amount of work, I may as well upgrade the brakes.

Thanks for any help.