These the right spark plugs?
 

I am just making sure I'm right in which plugs I am looking at:

http://shop.advanceautoparts.com/web...RPTUNEAMS_____

http://shop.advanceautoparts.com/web...RPTUNEAMS_____

Reason I'm asking is because I know from reading up that Mazda introduced a new set of plugs, but I wasn't sure if these were the updated ones. I also know that they are a pricey plug, and so seeing them for about $20, and the ability to pick them up at a store in walking distance, is a big plus.

I will look when I get home. I think they are 6401, 6411. For the leading and training number. If you put your car in it should pull them up right away. Plus when you buy them from advance you get a two year warranty on them. So when they "break" you get a new set. Oh order them online too. Sometimes they have a better deal. like 15% or 20% off and fifty bucks off your next online order. A pretty good deal if you get a fair amount of stuff.

Yup those are the ones.
But I would be will to bet that is price per plug.
You need two leading and two trailing.

My reference source:
http://www.ngk.com/results_cross.asp?pid=RE7CL&x=0&y=0
http://ngk.com/results_cross.asp?pid=RE9BT&x=53&y=17
http://www.racingbeat.com/RX8/Ignition.html


-------edit--------
So I put in a Zip Code of 9021 (because I don't live the states and it's the only one I could think of) to get a price.

To me it looks like 20usd/plug so you're looking at 80+ dollars not around 20????? ARe you only buying a single plug?

Right - those are the right ones, and price is about $80 for the set of four. 6700 and 6701 are one of the sets of part numbers they go by.

Most places except dealers have them for that price or less. Even Amazon sells them.

Ken

Thanks everyone! The car is running great now, but I figure once spring hits I'll replace the plugs/wires/coils to be on the safe side.

Why replace the plugs again when you just replaced it? Anyway, just to be on the safe side, replace all three every 30,000 miles or so.

I didn't yet haha.