The EJ207 engine for STI has its pistons (8:1 ratio) and turbocharger. STI GD used IHI VF30 (VF35 for JDM WRX Type RA) which blows 1.1 bars. WRX STi Spec C Type RA has IHI VF34. From 2003, STI has VF37. VF42 was installed on the EJ207 engine for WRX STI S203 and S204. Every STI engine has forged pistons.
Read Subaru Impreza WRX STI Spec C car reviews and compare Subaru Impreza WRX STI Spec C prices and features at carsales.com.au. Buy. 2004 Subaru Impreza WRX STI Spec C S Manual AWD. $45,500* Excl. Govt. Charges 142,850 km; 2001 Subaru Impreza WRX STI Spec C Type RA Manual AWD. $75,000* Excl. Govt. Charges 28,500 km;
Subaru WRX STi spec C TYPE RA-R - Autoblog the RA-R seats are tighter with better side bolstering and also they are black cloth+ alcantra and a heads up no the 08STI seats are not the same (usdm 08STI seats are grey and wider/flatter for usdm bums)
syAa.