Ed,
I had to modify the EBC pads or more precisely, the steel backing plate, due to no cutout for the anti-rattle spring.
Apparently the FA18 pads are used on a few bikes other than BMW's, and I guess the theory behind it, is if you don't know how to 'make' them work for your bike, you shouldn't be changing the pads in the first place !
Only took about 15 minutes with a rotary file installed on a die-grinder to remove the excess material.
That price was for one caliper, I needed to get two, due to the fact that I also have the dual front discs on my '81.