Cusco Front Pillow Ball Upper Mounts for 02-07 WRX/STi (666-410-A) Swyvecs please confirm if you'll need

please confirm if you'll need the 307 or 309 style

999 917 546 00

AEM's legendary Digital Wideband O2 AFR UEGO Gauge is a wideband UEGO air/fuel ratio controller (AFR) and gauge in one

the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors

From there

Cusco Front Pillow Ball Upper Mounts for 02-07 WRX/STi (666-410-A) Swyvecs please confirm if you'll needCusco Pillow Ball Upper Mounts give you control over unwanted forces under acceleration and braking. Both center lock and camber adjustable upper pillow ball mounts improve steering response and performance. A dramatic increase in stability over bumps and high speed corners keeps you on your intended line, while stability and safety under corner braking is also increased. Vehicle Fitment: 2002 2007 Subaru WRX 2002 2007 Subaru STi Does not fit OEM