Not sure if anyone has studied or looked at this before, but figured I would throw this out here. The original brake calipers that were used from 1968 to 1970 were a C8OZ-2B120-A (RH), and a C8OZ-2B121-A (LH). I always thought it was unusual that Ford would only have one vendor and one design of this caliper as everything I have seen has been a KH (Kelsey-Hayes) design. I dont think there is a Bendix front caliper unless I missed it.
I realize now that there is actually two different design original front brake calipers if you look closer - both are cast with the FoMoCo symbol and both stamped with what I think is a Kelsey Hayes date code. These two are both from original Jan/Feb 69 Shelbys and match their build dates so assume they are original to the cars. Curious if anyone has seen anything other than these designs during these years. The caliper pictured on the left that I call the tear drop design dated 020KH9 is by far the most common I have seen.
20240505_185039 by
Marcus Anghel, on Flickr
20240505_185140 by
Marcus Anghel, on Flickr
20240505_185122 by
Marcus Anghel, on Flickr