I just received my JB4 a week an a half ago. The JB4 comes with fuel wires, the only thing you have to purchase extra would be the Bluetooth adaptor. You will be blown way by the power increase, just make sure you have oil catch cans installed on your engine.
The JB4 and the fuel wires are very easy to install, here's the website.
http://www.n54tech.com/forums/showthread.php?t=52020
Welcome to the forums & congrats on your purchase.