Here's some detail on the bump steer kit.
Bump Steer kits
You may want to talk to your engineer before fitting it. He may want to see the original track rod setup from the Ford AU installed. I don't have an engineers report for my kit but I can supply a before and after bump steer graph from my car.
The kit is all high quality materials. 1" diameter chrome molly tube, Chrome molly rod ends and Grade 8 and grade 12.9 hardware. The clevis is machined from 1020 Bright steel bar stock. There is no doubt in my mind, It's stronger than the original track rod.
Cheers