Yes they will. Pickups from '73-87 and 'burbs and K5's from '73-91 have the "interchangeable" parts. Interchangeable being in quotation marks being that there are always exceptions.
What's the best lift....how 'bout telling us what kind of wheeling you're going to do.
Stiff suspension/good price (what I have) = Rough Country
Soft suspension/flexy/good price = Tuff Country ez-ride
Really great product/even better warranty = BDS