legacycentral bbs

Does anyone know if the new wrx heads will fit onto the older EJ20t? Someone is asking me if it is possible to put an older 4 bolt EJ20t bottom end into a 2002 USDM WRX and still use all the top end components of the 2002 engine.
Mark

I would think that they would we have used EJ22t shortblocks to
replace blown US spec WRX engines and it works well and everything
did fit.