NEW IN PACKAGE GENUINE OEM MOPAR W9 RAISED PORT ALUMINUM CYLINDER HEAD. FITS SMALL BLOCK DODGE & A4 MIDGET BLOCK, W9 CYLINDER HEADS, W9RP. Mopar Performance W9 Raised Port Aluminum Cylinder Head. This partially-machined aluminum cylinder head with raised intake and exhaust ports is recommended for use in Sprint and Midget cars. High-strength, lightweight A356 aluminum alloy casting. Ports raised significantly higher than standard W9 cylinder heads. Machined deck, intake surface, head bolts and valve cover rail. Small cast ports allow for flexibility in porting (requires porting). Chamber is cast filled-in to allow very small machined chamber (requires machining). Requires maching for valve guides, spark plugs, intake screws, porting, valve…