1970 Duster AlterKtion, 4 Link, LS/T56/Turbo and Minitub

You can always add more bracing than i did. Obviously I have the tubes welded, and 9" ends with c-clip eliminators because if you're doing the work you may as well make sure its good to go. If you call yukon gear and want a set oft heir 31 splines, narrow it 2 7/8s on the long side they will sell you the kit with two short side axles like they did for me a few years ago.
What size tire? Gear ratio? Weight of your car? And how fast have you been on that rear end? Sorry about asking so may questions but I’m seriously considering using an 8.8 and I HAVE a 9” housing and a completely finished mopar 8-3/4