While we do not offer a sub frame, keep us open as an option on the full-frame end. Ours is less labor intensive than any on the market, and has a lot of great benefits as well.. such as longer shock travel for great ride quality, and more 'standard' features than others which offers better bang for your buck.
Let me know if you have any specific questions!
www.GMachineChassis.com
-Dale
(815)206-2230