You didn't bother to tell us what engine you have. MPFI is better for mileage, driveability, and low emissions than throttle bodies like you are considering. However, not many multi-port manifolds available for Mopar engines. Personally, I like to roll my own, so if I bought a kit I would go with Howell Engineering or such. I like the idea of re-using factory parts, since cheap, clever, and helps the planet, plus many find that high dollar after-market parts are not always well engineered, though most rave about FAST EFI. I guess after spending ~$2K they must say it works great.