I have a brand new, never installed Critical Path Cross-member for Jeep ZJ. This is the 4 hole design, intended for 96-98 ZJ Grand Cherokees.
Designed to accept IRO Y-link Long arm OR custom radius arm setup with same size joint. May work with other brands of long arm such as Clayton, Ironman, Rusty's, etc. but you would need to verify.
I ended up going a different direction on this project and do not have a need for this. Includes everything needed, including all hardware still in the original bag. Cost new is $250 + shipping. Will let go for $200 + shipping.