Head over to Barnes Off Road, https://barnes4wd.com/products/jeep...nt-and-4-link-rear-long-arm-suspension-system, they have all the parts you need to create your own system or a complete 4 link rear and 3 link front kit.
The great thing about the Barnes kit is the adjustability which you East Coast guys need. Running muddy conditions you can change the anti-squat, running rocks the next day you change increase the ant-squat by simply moving two bolts.
If you want to build your own , short arm, mid arm or long arm system Barnes has the prefab parts and the beauty of the Barnes' system is adjustability, which systems like Savvy do not offer. Not to mention a Barnes sourced system or kit is way cheaper.
With parts from Barnes and help from Crawlpedia, https://www.crawlpedia.com/4_link_suspension.htm , anyone can become their own suspension design expert and builder.
Do you care to share with the class what behaviors in AS one would want to change when running rocks one day and mud on the next?