Ok, well I was sold the Baer Iron Sports becuase supposedly the valving was supposed to be a correct match and was assured that they would fit my 15" hoops. Well the kit is nice, its a 03-04 Mustang caliper. Nothing special. Tiny pads. Nice bracketry and an internal parking brake on the caliper. I believe they are an 11.5" rotor. But it's not even close to fitting either my Intro 15" hoops or my Draglites. This kit is $595 most places and roughly $45 to ship to me. I bought these through SCandC.
So, I have used the Explorer style brake kit on another 9" and knew the caliper sits in a low profile. They have a decent pad size, better than the Iron Sports. The rotor is 11.5" in size. The one downfall is that I dont like the Ebrake set up on these. They have a internal rotor style (drum style) EBrake with bulky backing plates. BUT....I know they work! And the caliper itself seems to have similar clamping power as they Iron Sports.
I bought the first Explorer style brake kit through Quicks Performance with OE style regular rotors for roughly $500 the first time around. The second time, I went straight through Currie and upgraded to the drilled rotors. I had to also buy the axle retainers and my bill was $605 shipped. Not a bad price at all.
Most other brakes that I looked into that were supposed to fit my 15" hoops, no matter what the brand was, seemed to be more of a drag race brake that I wouldnt be comfortable runnning. Only other options were far more than I felt necessary on the rear end. And I wasnt going to spend $2k for rear brakes.