I think I might have scored a great pickup today

Well...the calipers came in and yes, you guessed it...they are wrong (go figure at that price). They are the single piston '73 and up disc calipers. Turns out all the listed 4 piston calipers in the NAPA computer are wrong. $171 per side before the core charge for the KH. Ordered a set from Calipers Online, $75/side.