Junkyard Parts - 1 ton 4:10 Rearend?

[chevy71super]

I was scrounging around a junkyard north of Seattle. There was a 72 which must have been a 3/4 or one ton. Rearend looked like a full floater though I really don't absolutely know what one looks like. It was 8 lug and had 8 axle bolts holding the axle on the outside. Option list said rearleaf suspension, no mention of 4:10 but someone wrote 4:10 on the side of the truck. Also had an aftermarket rearsliding window. There was another truck with a rearslider also.