IAG 1150 CNC Ported Drag Cylinder Heads Package for 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT Include Chamber Modification (EJ20 Heads On 2.5L Block Only):Yes or if you simply need

or if you simply need to replace a defective unit

2-row 42mm ultra high-performance core

Stainless steel mounting hardware

All three variants are identical in construction

IAG 1150 CNC Ported Drag Cylinder Heads Package for 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT Include Chamber Modification (EJ20 Heads On 2.5L Block Only):Yes or if you simply needIAG 1150 CNC Ported Drag Cylinder Heads Package 02 14 WRX 04 21 STI 04 13 FXT 05 09 LGT Maximum Flow for Maximum EJ25 Power The IAG 1150 Drag Cylinder Head Package is the highest specification head offering in IAG's EJ25 lineup, built for drag racing and competition applications targeting maximum peak power. Starting with new Subaru WRX STI OEM castings, IAG's Centroid 5 axis CNC ports both intake runners and the exhaust dog leg in full, and the heads