Originally Posted by Folger Subaru
The only bad news at the moment: We ended up only having 1 caliper come in on the order Friday.
I have found that we got the only caliper in the US currently, that isn't already on a car. lol....
Interestingly that rear option has been around awhile. I(and a couple of other NASIOC members) have had a set of these on the rear of our cars for almost 2 years now. Its been on the B4/GT-Bs since 2001. The Legacy forum broke this option out a long time ago. Of course not everyone reads the Legacy forum....
Just about everything you have posted is correct. It is a unique caliper(others specualted its the older Legacy Turbo caliper on a new bracket - its not.)
Brief on rear rotors:
Old BC/BF Legacy Turbos 266x18(170)mm
"H6" Legacy 290x10(170)mm
05Legacy GT 290x18(170)mm
Several points that I think you might want to address:
1. Affects on Bias? The advantage of that massive front caliper and rotor is obvious BUT what are the caliper piston sizes in that caliper. Too much brake torque output on the front makes the car brake worse(even though it may be able to consume more heat.) Based on your reviews it may be that Subaru has put a smaller caliper piston in the caliper to compensate for the larger diameter rotor. It would be win-win then. [The rear upgrade outputs identical brake torque as the "H6" upgrade - its just also vented.]
2. I beleive the pads used on this setup are the same as the 04+ WRX pads but different from the earlier pads. You might want to re-verify pad compatibility again. North Ursalia had a thread a while back in the brakes forum about this. Effective 05 the "H6" brake setup is no more and AFAIK this setup uses a different pad from the earlier designs. Its not a big ordeal one way or the other, just not wanting anybody to get caught flat-footed.
Great work tho.