Hill's World Rally Blue WRX hits all the high notes thanks to its Version 7 RA Spec-C, a 2.0-liter JDM STi engine swap. The RA Spec-C engine is Subaru's race engine; the RA stands for Race Altered.

Subaru will build just 30 of the 349-horsepower WRX STI Diamond ... Its 2.5-liter turbocharged flat-four engine dumps 349 ... Diamond Edition cars also get a standard STI engine bay chassis brace ...

Built Engine Subaru WRX STI vs. Nitrous C6 Corvette $2,000 Drag Race Gets Tight. Published: 29 Dec 2016, 13:20 UTC • By: Andrei Tutu. 5 photos. Photo: YouTube screenshot.