Struts? Whats what?
 

I just bought a set of "S" brakes for my 1972 "T" and boy I am happy, but I have one proublem. "S" brake s will not fit in the 3" spacing that are "T"s
So I need to Look for 3.5" spacing right.
Well what are my options "S" struts or "SC" correct?

ANd what are the difference between Koni and Bilsteins?

Do they both have 3.5" spacing and are just different brands
or do the two have different set ups.

So what do I need to make these nice "S" brake that I am very excited about work?

Also if you have any of these parts for sale please let me know
Thanks for the help and check out my project if you get a chance

http://www.356-911.com/911restogallery/derekoxford911.htm

I believe S and SC struts are both 3.5", so yes you need either of those to fit the alloy calipers. There are both Koni and Bilstein 3.5 struts, so take your pick. The Bilsteins mount a little differently in the strut tube than the Konis, but the difference doesn't directly affect your situation.
I assume a '72 will accept the struts in question.