I have used the "budget conscious " e-bay special brakes....and Wildwood brakes.....all have been within .010 (nominal) on moving the hub.....most make no change what so ever.The only ones that pushed the hub out were a set of ancient Wilwoods salvaged off a Magnum Force K
I have also swapped the Wildwood Pro spindle for the e bay special......both put the face of the spindle in the same spot....as they should
Nothing wrong with either.....you get what you pay for.
In comparing UCAs with others ....from what I am seeing, the HDK appears much shorter than any other on the market. Combined with the upper shock mount and chromoly supports, these components allows the narrow track width. Since we all use the same factory attaching / mounting points.....I struggle with a much longer UCA being able to achieve the same 58" track width......but I have been wrong more than once. Ask my wife.
Upon request, HDK supplied the shock mounts and support hoops to a quality builder that had a RMS. He loved it, but was tired of catching his fender lip and wanted to pull the tires in. , He cut off the RMS shock mounts and took over an inch off the control arms.Mission accomplished. My point is, with the RMS /Turbofreek style shock mount combined with longer control arm.....I just do not see how anything under 60" is possible.
I think RMS pull their hub inward by utilizing their torsion bar k.....like in Charneys BEAUTIFUL AND FAST Dart.
Just shop talk.
