QUOTE(bdstone914 @ Feb 14 2020, 09:52 AM)
Those are a one year only 1979 BMW 320i caliper. They have the spacer to use with a vented rotors. Removing the spacers allows them to be used on non vented rotors.
GLWS
Yep, I've confirmed these are a one year only caliper, via the pelican write up about 320i calipers for 914s.. and there is indeed a spacer on these ones, separating the two halfs . Says pads are 40% bigger, etc. May be a cheap option for those converting to bigger power engines.