In addtion to those nuts and bolts that were mentioned to you already, the kit likely includes the hardward used to attach the hard top to the windshield frame.

However, the person you're buying the hardtop from may include all of that stuff with the top, so I'd wait until you have the top in hand before spending money on a kit.

1977 CJ-7, fiberglass body, AMC 360 w/ headers, DUI ignition, Edelbrock intake and Holley 4150 carb, TF999, Dana 300, 4.56 gears lockers, York air comp, 4" susp lift, 2" body lift, BFG 35" M-T tires, Megashifter, AGR pump & box, REP8000 winch.