Have you tried a mobile installer? I have had very good luck with Graham Yarbro at 2U Tire. He has handled tire changes for several of my vintage cars.
I typically order the tires I want from Tire Rack have them delivered to 2UTire... but they can order the tires for you if you prefer. Then they come to my home and install. This way I can remove/reinstall the wheels myself and no without a doubt no one used an impact wrench (although they will do this for you if you prefer).
You can watch them remove the old tires and install the new tires to ensure no scruffs or scratches on the wheels.
Graham Yarbro
2UTire & Wheel
602.346.9210
info@2utire.com