to space or not to space
 

thoughts of h&r trak spacers 21mmfront and 28mm rear 0n 78 911sc to widen track and fill out wheelwells car has 6 and 7s factory pros and cons? mainly street does have turbo tie rods

Check out the thread in the AutoCross/Racing forum. This is a much debated issue.
I personally run 1 inch front and 1.5 inch rear spacers to fit my Cup wheels to my SC. I don't see a problem with the spacers you would like to use.

http://forums.pelicanparts.com/uploa...1152302832.jpg