what brand? i'd only trust name brands like eaton, procharger, or an SVT take off like str8t six yeah like i said SVT take off. but name brands are a little more..
Yeah, the supercharger costs $4000...but then you have to add in the installation and the tuneing and all the unexpected sh*t that goes wrong with it... Just save your money for your Cummins
jarrets kit is sold. IDK what gains i have, since i dont have a dyno near me. but the difference between a lightning and a f150 is 120HP. so i gained around that much, possibly more because i have a higher compression ratio than a lightning
read this. http://www.fordfullsize.com/forum/f79/str8t-sixs-lightning-swap-thread-6851/ and this How to: Ford Lightning swap on a N/A F150 - F150online Forums