Mach problems: The DOHC design from Ford in 03 had some problems with leaky cylinder heads, most likely the #5 cylinder. It's still warrantied, and supposedly fixed in the 04's. I am unsure of the tranny, but keep the mods under 400hp if you want it to last. I think it's the same as the GT. That's a good deal. I don't know where some of you guys get your numbers from, at least in California, there is no way you could get one for less than that. You have to understand that you could talk them down all you want, but they'll make up for it somehow. I hate people that think they can grind and grind and expect to get the deal they want. While you walk not getting the numbers that you want, you also don't have that car. Understand selling cars is how guys like me get to eat and pay the bills. You WILL not get the wholesale cost on a car. As much as some of you guys think you do. Give us a break. I know some sales guys are peices of crap; one dude lied to our owner saying my customer had no idea who I was, yet the same time the owner thanked me for handling him with courtesy. Anyway, that is a great price. Get it. Don't worry about the internals by the way. The GT and the Mach share the same stuff, and they are no slouches from the factory. They have been around for a long time, and have tried and true proof that they last; just look at the taxi and police vehicles. The Cobra parts are good and are a lot stronger than MACH internals, but they are not graced by the hand of God. Cobra pistons are notorious for the dissipation of the teflon coating on their parts, and they can break and become damaged just as easily. Its going to take some crazy pressure to break the Mach internals. If you stay N/A, your motor will take 125-150K miles of abuse. In my opinion, they are amazing machines and much more comfortable than the almighty Cobra.