Rear springs and the lean

[1LowToy]

I' noticed my neighbors blazer down the street. The blazer has a 5 leaf pack that's surely more stout the my mush 4 leaf pack. Are those springs compatible with my c-10? Same length, width and are the blazers having a lean problem too?

Otherwise I have two sets of springs and I was going to take them all appart and mix and match springs by arch and see what I can put together. I have another donor truck on the way someday soon and I looked at it the other day and it has the lean too. So maybe two left side springs?

I want that lean gone, the new springs in front have neartly leveled the front so I know it's taken care of, maybe just a little lower but I have a plan for that.