Bumping and updating this thread as I have found a good rear solution for those that don't want to do the crazy ebrake setup for MZ6 brakes:
99+ 626 rear brakes
I've been researching all morning and found a bunch of Probe guys do this swap. They already know about the P5/MZ6/MS6 swaps and those all bolt up to a Probe, as do the 626 brakes, so they should also be a direct swap for us! They are the same diameter as the MSP/MZ6 rear brakes, but bolt in and are way cheaper!
I already have a set of 07 MZ6 front brakes, and will be finding some 99+ 626 rears to complete my OEM BBK. Very Excite!
Front: (Height | Width | Weight)
2006-09 Mazda6 (v6) : 298mm | 25mm | 19lbs
2003-05 Mazda6 (v6) : 282mm | 25mm | 14.8lbs
2003-03.5 Mazda MSP: 273mm | 24mm | 13.5lbs
2002-03 Mazda Pro5 : 257mm | 24mm | 12lbs
Rear: (Height | Width | Weight)
2006-09 Mazda6 (v6) : 280mm | 10mm | 9.3lbs
2003-04 Mazda6 (v6) : 280mm | 10mm | 9.3lbs
2003-03.5 Mazda MSP: 280mm | 10mm | 9.3lbs
2002-03 Mazda Pro5 : 261mm | 10mm | 9lbs
1999-02 Mazda 626: 280mm | ??mm | ??lbs
Research links:
http://forums.probetalk.com/showthread.php?t=1701263582
http://www.mx6.com/forums/2g-faq-performance/199188-brake-upgrade-how.html