Closed deck Subaru engine case conversion - AA Performance Project : AA Performance
A closed deck is the way to go when you're looking to make BIG power on an EJ series Subaru motor. No longer limited to the ever more rare EJ22 blocks you
Supporting Your Cylinders - Open, Semi-Closed, Or Closed Deck?
Prime Motoring Phase 2-X (P2X) EJ25 Closed Deck Shortblock
Closing SUBARU engine blocks - Satis Tech
The Closed Deck Subaru EJ20, Built for Boost! - MotoIQ
IAG 1000+ Closed Deck Long Block Engine with Stage 5 CNC Completely Ported Heads for 2006-14 Subaru WRX, 2004-19 STI, 2004-13 Forester XT & 2005-09 Legacy GT
IAG Performance Stage 3 Magnum EJ25 Closed Deck Case - 14mm H.S.M., Fire-Lock, (No Bore & Hone) - For Subaru WRX, STI, LGT, FXT | Dirty Racing Products