Thanks for the reply. It looks like Dr. Diff's stuff is not for pin-style calipers. Other research agrees with your suggestion of the 73+ Challenger hoses (1970-74 E-body/1970-72 B-body hoses) for the 1970-72 B-body/1970-74 E-body pin calipers (as opposed to 1973-78 B-body calipers, requiring...