Panhard, Diagonal Link, or both with ladder bars?

no...but Summit carries them, from Howe,
I got the ones (just like Summit sells) on my silver Duster from Detroit Speed years ago. NOW, they have their own swivel link....and they are pretty proud of them. Two rear lower bars...$400

I use the rubber bushed on my panard bar also....best I have found.
https://www.summitracing.com/parts/...-howe-racing&gclid=CODQw72099ACFdK6wAod5qsDaQ