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Discussion Starter #1
I have a short block that I'm planning on putting in my 02 Subaru. I was told it was an STI short block but not sure on they year. Are there any markings on the block that can help me determine what year this block came from? So I know what parts to order as I am putting it together, or is there no real big changes between the years?
 

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Discussion Starter #3 (Edited)
Thanks for the reply. I'm going to try to get this car up an running as soon as I can.
Anything I need to look for while shopping around for heads to put on this block?
 

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I think both the WRX and the STi and possibly even NA 2.5 are all stamped ej25. Some say the pistons are different though.

To run it in a 2002 you use 2.0l WRX heads. You need to read a bunch about compression etc. etc. - search for "hybrid build". A bunch of people here have done it.
 
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