ok heres the deal. I am going to buy a 2003 mach1 that is supposed to have an 03 cobra superchaged motor in it, along with IRS and all. I am wanting to make sure that it is a real terminator motor not just the mach one block with an eaton on top. Is there any quick checks I can do to it to make sure. istnt the mach 1 still an alumnium teksid block and the 03 cobra a cast iron block? If so shoulnt I be able to take a magnet to the block and make sure? and any other advice would be great.