All Subaru EJ25 Single overhead cam and dual overhead cam engines we sell are 100% re-manufactured at our machine shop. We don''t outsource the rebuilding procedure. Cylinder block is honed, bored and pressure tested, Cylinder head is resurfaced, connecting rods are reconditioned and engine is dyno tested after it is assembled. Subaru EJ25 engines for Legacy from Japan don''t have EGR and most JDM Subaru engines are 2.0 ltr are not compatible for USDM Subaru Legacy, for this reason we offer rebuilt version of EJ25.