The caliper on the left is from the 1990 Beretta.  It is made of cast iron and has a larger piston and throat distance.  The mounting holes are the same as the stock Fiero caliper, pictured on the right, so it bolts on without adapters.  Remember, there is a left side and right side caliper - they are not identical as the fluid hose hook up is mirrored.

Copyright 1999 - Randy T. Agee