Budget 5.0 aluminum cylinder heads are always of interest, and it appears Flo TEK [(800) 270-0095; www.tristatecylinderhead.com] offers a set that may be too good to pass up. The company's 5.0X ($798 complete) heads are made of A356 aluminum and feature 1.94 intake/1.54 exhaust stainless valves, a five-angle valve job, 180cc runners, 58cc chambers, and high-performance springs. Rocker-arm mounting is your preference, as castings can be set up for either pedestal- or stud-mount arms. Based on the flow numbers we saw (248 at 0.600 intake/191 at 0.600 exhaust), these heads could probably work well on a Fox 'Stang that's receiving its first major (heads/cam/intake) high-performance upgrades.