Two different style sway bars for 66. Which one should i use?

Two different style rear sway bars for 66. Which one should i use?

I'm looking into installing a sway bar, but can't figure out the difference between these two styles:

http://www.mustangsplus.com/Merchan...roduct_Code=00644&Category_Code=Sway_Bar_Kits

http://www.mustanghut.com/catalog.a...nsion&CatId=277&SubId=3&pdx=1&PartId=02287006

Will either of them interfere with subframe connectors or slide-link traction bars?
Please send pics of installations. I am having trouble finding diagrams or pics of installs.