are your LCA's have factory sway bar tabs? if not you need an aftermarket sway bar for a 68 (not a 73-76). I like Firm Feel bars. they install alot cleaner than others. if they do have sway bar tabs, are they inboard of the strut rods? if so that is for a 73-76 sway bar and they go thru the k-frame differently than 68-72.