I dont know of any aftermarket company that makes 4v heads, you could have yours ported/polished and valve work done of course~ but no idea on a new head all together. Also dont forget the lower/upper intakes~
__________________ 2003 Cobra Vert (Redfire) #3938 of 5082 @ 05/27/2003
472rwhp/493rwtq -Modification List - Dyno Sheet 2012 Mustang 3.7L M6 (Kona Blue) 2011 Ford Edge Sport (Red Metallic)
Well I just got the car back and they said that there is nothing wrong with it except I need a tune up. I already knew i needed a tune up. Oh well, thats better than warped or cracked heads or a cracked block but it still doesnt really make since to me.
Bassani Off-road X-pipe, Magnaflow Catback, BOMZ Racing CAI, Smoked Tail lights, Black Projector Headlights