I stumbled on another site that has parts. Sorry if you all know about this already, but I thought I'd throw it out there.
I'm not supporting them or trying to convince you to buy from them, as I haven't ever dealt with the company, but just giving the Mazda3 owners some more options:
Looks like they have brakes, pulleys, CAI (pretty $teep, though), some more stuff.
There wasn't an address, but I did a reverse lookup on the phone number to come up with this:
Lochhead, Ray
18391 Marsh Creek Rd
Brentwood, CA 94513-4801
(925) 516-7382
Edit: I notice the links to their dyno #'s for the CAI and exhaust systems are not functioning, so I sent an email off requesting it from them. Let you know what it says.
Just to let everyone know, I am trying ot keep a running list of all of the sites that stock parts for our cars over at AxelaOwners.com here http://www.axelaowners.com/forums/t135.html. Also if you see any sites that I do not have listed just shoot me a pm or an e-mail and Ill get them up there as quickly as possible. I am trying to keep it updated at least once a week but with the small amount of sites there is not a whole lot of updating