just something i found interesting, i contacted a company i found from the shelby magazine that actually build gt's into serial numbered shelby's with superchargers , suspension upgrades and the like, they are companys that are with ford and licensed to give these cars serial numbers and certificates of authenticity, etc. the companys name is http://www.quantum-perf.com I asked them if i could have this done with my auto 07 gt and they wrote back saying yes but my auto tranny was going to limit the power i could make and that the stock tranny can only take 400hp reliably. just thought id throw that out there for anyone that was curious about what these trannys can take and be reliable.