Top of the 2007 Subaru Impreza range was the WRX STi with 260 hp, considered at the time the default Rally Replica of Choice in some circles.
The STi Type UK was available with an optional 300 hp engine with Prodrive re engineered engine parts that were stronger and or lighter than the originals including a larger air intake and intercooler.
Unique to the Type UK is a Thatcham Category 1 alarm, satellite tracking system, enhanced rust proofing …
and 10 spoke gold alloy wheels attached to a reengineered suspension which is more stable than the standard Subaru Impreza WRX STi.
Prodrives Driver Control Centre Differential System (DCCD) allows the driver to control the oversteer (loose) and understeer (push) characteristics of the car by adjusting the front to rear torque balance delivered to the four driven wheels.
Against the contemporary Mitsubishi Evo the STi Type UK appeared the the more reasonable value.