I have Crossover/highsteer made by WFOconcepts.com, Trevor is the owner. Great guy to work with...
Anyway I had 3 different pitman arms until I got the right one. It comes from a Full size Jeep Wrangler and Trevor made the hole bigger to fit the bigger TRE.
Here is the GM one I started with, you can see it was way to long for my setup. I have a very low lift so not much room for highsteer.
So it took some back and forth with WFO sending me parts and me sending back what did not work but we finnaly got a working solution on my 72K5.
I also run Hydro Assist
Get some pics of your arms and send them to whoever made them and see what kind of help they can offer.