Here's a link to the kit on Steeda's site (which happens to be where I bought it a few months back, only place that had them in stock at the time). Part number is M-6550-T46
They're basically a better performance grind than stock cobra/mach/etc. cams while still being streetable. N/A or supercharged. Kit includes undercut SS valves, which helps flow, etc. and high-lift springs. They fit 03+ DOHC heads. Maybe even earlier DOHC heads, but I don't know for sure on those.
Ford Racing DOHC production style valvetrain kit for "FR500" Heads - 96 - 04 $1,600.00
High Lift Camshaft kit developed by Ford Racing. Works in naturally aspirated and supercharged applications. For use on all DOHC 4V cylinder heads. Camshaft have great idle with excellent power through 7,000 RPM. Kit comes with 4 camshafts, high lift valve springs, intake and exhaust valves, and related hardware. Requires removal of cylinder heads for installation.