Originally posted by APS
I'm not sure who you are quoting.
Specifically regarding the EJ207 shortblock having cast, not forged pistons:
MY03 EJ207 STi Piston Set -- $1022
This latest STi piston is a departure from previous years in that it is a cast aluminum design. However, we believe this to be a special hypereutectic material and STi claims a 120% increase in strength over their previous forged pistons. The high silicon content of the aluminum also has the benefit of providing exceptional scuff resistance and reduced thermal expansion which allows for the use of tighter clearances. Compression 8.0:1.
I also respectfully question the comments regarding the reasons for the price of the US vs. International (UK?). STI. The UK STI makes 265 hp and doesn't even have DCCD standard. Why would it be more expensive to make? It's notoriously difficult to compare msrp's in different countries.