I am on my second set of +4's. First set came out at 61k for a look and could have been reused. Spark plugs are a personal preference item. There are NO plugs that will give you more power. Everyone has their own favorites. +4's work for me.

Barry-2002 WRX-Sedona Red Pearl
K&N Air Filter- 225/50-16 SP5000's/Cusco Front Crossmember Brace/Borla Exhaust
JoeP Manual Boost Controller/Kartboy Solid Rear Endlinks
Samco Intercooler Hoses
Silencer Removed
Will Always Be Immaculate