Because not everyone can afford Defis:

Greddy WRX Look 52mm Gauges w Gruppe-S 52mm CF gauge pod:

-EGT
-Oil or Fuel Pressure
-Boost
-Gruppe-S CF 52mm Guage Pod

$569 Shipped
$519 Shipped w/ Temp instead of Pressure

http://www.gruppe-s.com/Greddy/grd_52e_l.jpg
http://www.gruppe-s.com/Subaru/subint/grp_cfpod.jpg

Thanks,

Geoff
geoff@gruppe-s.com

By the way, these gauges are standalone (unlike the Defis) and they include all sensors!