one major thing you will need to find out is about the computer and the compatablility with a bigger motor. If you can find someone to make a chip or if a jet chip will sufice, I would think that running your stock computer with a larger displacement and bigger cam would prove problematic for your computer.
yea it sux trying to put in bigger engines into newer cars its horrible, hey jeepr89, the stock comp for th e4.0 will work fine with the new displacement.