| Here is some first hand experience from the dude who discovered the compatibility, and his impressions on driving both with Z32 rears and STi rear calipers. "I actually had the chance to test both rear setups and I have to say, stick with the z32 rears. anyone want to buy rear sti calipers especially after I pretty much ruined my chances of selling them here :duh: :D I have front sti, rear z32 and a 17/16 z32 bmc with very sticky dunlop direzza 02G tires. I drove without the above bmc for a while and all I can say, as it has been said before, it is a must have and I have a eu spec car originally AT which comes stock with a bigger mc and z32 front calipers. Get the BMC, you will never regret it!
I ran them both on a high speed and hard braking course. With the z32 bmc the z32 rear felt better and the car would just shed speed and keep very stable under braking especially trail braking.
Dont get me wrong, the setup with sti rears felt awesome, just the z32 were better for me at least." Here is a pic of STi caliper with Z32 rotor.
 Pic of STi Brembo with Evo rotor. Hubcentric too! Shows location on 3mm washer needed. This method however nullifies the stock ebrake. So line lock needed for working ebrake I guess.
 Link to thread on Zilvia with much more info.
[ http://zilvia.net/f/tech-talk/93748-check-out-my-new-big-brakes-anyone-else-do-yet.html ]
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16:41:53 12/12/08
More info. - 
