look closely at 87 thunderbird turbo coupe rear calipers.
a few weeks back, i was gifted info on the ssbc rear disc brake kit so i could copy the bracketry their kits contain.
in the info, it was stated the calipers used were thunderbird turbo coupe items.
although i have not held them in my hands, i did a quick rock auto search, and it appears the calipers for the 87 very closely match the pics i was sent.
trying to "pay it forward", check the caliper or rebuild kit for it, and report back one way or the other.