the Z calipers are inadequate for the Z32, hence the reason the castiron calipers were a cheap attempt at making them temporarily acceptable as an OE brake setup for that car. *every* z32 owner complains about brake performance, obviously cause the car weighs an extra 1000 lbs MORE than our cars.
so, on our cars.. ANY z32 caliper is good, especially the better aluminum ones. Stick with high quality italian made rotors, and you dont have a problem. Go with cheap, made in china bullshit.. and like most of anything made in china, you end up with fried rice.
Both calipers are durable, the cast iron being the stronger (and obviously heavier ones). so, for most.. alum is the choice caliper.
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