rear sway bar info

[amxrestomod]

I have a '68 Amx and want to put in a rear swaybar and I see where a set is recommended but how does it mount? I have a lincoln versaille 9" in back that has been moved back 3/4" from the original pins and lowered 1 1/2".
Does the rear swaybar mount to the rearend and is it over or under? I don't want to buy a $400 kit if it wont fit. I also have 2 1/2" exhaust over the axle and out the back. That has to clear also. Any help would be greatly appreciated, pictures are worth a million words.