I have been considering doing the Arning/Shelby upper control arm relocation mod. I recently purchased a kit that will allow me to do the modification on my 67 Cougar. So Once I do that mod I have to make sure that local auto shops can do a proper front end alignment for this type of front end geometry mod or I learn how to do the correct front end alignment.
Here is an excellent link dealing with the Arning/Shelby UCA mod
http://dazecars.com/dazed/drop.html