ZL1 rear sway bar bolts right in. You'll need the bar and new sway bar links. The holes are already in the lower arms. For the front you can use either the ZL1 or the 1LE. Again you'll need the sway bar and new links. Where the links attach at the upper end you will need to enlarge the hole to accomodate the larger end link.
LS3/M6 K&N, VMAX throttle body, RX Catch Can, skip shift eliminator, DT shorties and Solo HFC, DRL harness and 5K LED DRL, ZL1 rear sway, 1LE front sway