Someone on here was saying Alcans/Off-road Design were the way to go. I have a unknown brand 6in lift the PO installed on my 71 K20 and it’s got huge blocks in the rear. I’m looking to swap those for an all-springs lift and heard those were great. I and unsure if their price point but goofing around on their website, they let you just about customize everything on their springs build sheet. They also offer pre-made Skyjacker
https://www.offroaddesign.com/custom...lug-axles.html