my buddy is selling his to me for 100 bucks off his f150, it will work for both. anyways should i just pick this thing up or should i go with a hand held like the diablosport so i can change as i mod. i would pretty much use it for my 373s and the basic mods like catback pullies intake etc. i plan on having the car tuned on a dyno later on its life to check the air/fuel so im sketchy on this chip. thoughts???