compatible Rear end for 64'

[ebaby35]

Hey I know this question has probably been asked a million times but im confused on what can work and wont. I would like a rear end that doesn't require me to move the perches but thats not a must. I would like to find one that is 5 lug and have disc brakes. Im going to be going to the junk yard and need to know what to look for as in what years and types of trucks will have this. I dont mind having to relocate perches just need something same width. I sold my 12 bolt and yes I know it was mistake.