This thread on NASIOC is a really good bit of information. As long as your stock brakes are in good condition no matter what upgrades you do to them you won't be able to stop your car one inch shorter. As long as you can get the ABS to cycle you've maxed out the braking performance of the car.
Quote:
Originally Posted by Manarius
It's strange that the calipers don't just bolt right up. Even the newer STI calipers bolt up to the early 90's impreza hubs.
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You can bolt any Impreza/Forester caliper to our cars just fine. Brembo's, the Subaru 4-pots (which I'm fairly certain are exactly the same caliper body as the 300ZX TT 4-pots, just with different lettering)... The bolts all line up. The problem is that the SVX was designed for a larger and odd sized rotor, and Subaru did this by moving the mounting points for the caliper further out. So, if you bolt a Brembo caliper to an SVX it sits about 1/2" farther out than it would on an STi and consequently the rotor doesn't match up. You end up with some of your brake pad hanging out in space where there isn't a rotor.