3/4 ton rear sway bar options

[mal68ibu]

I have two rear sway bars that i've pulled recently and would like to use one of them on my 67 GMC. Seems theres lots of stuff here for coil sprung trucks but not too much for leafs. The smaller one is off a 99 suburban and will require some mods to mount up the axle bushings. The second one is off a mid 90's C30 or larger (only things left were front fenders, grill and frame so I do not know what year) and I have a pair of axle brackets I pulled off a 76 F250 camper special that will mount it up to my rear axle. My truck has a factory front bar and I'm wondering if the rear is overkill, and I should stick with the itty bitty burb unit and fab up an axle mount. Here are some pics.