If so, I am really considering getting these:
http://www.glowshiftdirect.com/04-08mazda3customgaugepackage.aspx

Haven't heard too much about them but that price is tough to beat.

I've never heard of them, that price would make me wonder about the quality. Also those say they are for the regular 3.....i'd make sure they will fit on the speed 3.

theyre pretty alright gauges. its a ebay brand though. ive had them on my fc for 2days with no problems til i switched to some defi gauges.

the pillar will fit, you just have to disable your side curtain airbag (big safety issue!). the gauge itself wont be as accurate as a wideband, but they will work.

**also, they say it shouldnt be used on a vehicle with side airbags, which makes me wonder why they sell it for the Mazda3**

this looks like a bad idea for anything with pillar air bags this is why ive never purchased a wide band

get the center console gauges, it goes on your dash and fits flush for a stock fitment...u can get it from CP-e...or the ezMount, or vent gauge.

http://www.cp-e.com/2128.html

The guages arent bad. I have had them in my FD for a long while and havent had any bad complaints. It would be worth it to save for some greddy/apexi/HKS/defi guages though

Bought a few (gauges) from here before. Great service etc. http://www.egauges.com/

Would match very well;