1.) Search for a supplier (that sells motors:doh: ).... there's plenty of them.
2.) Decide what you need and how much it's going to cost
3.) start thinking about what you're going to do with said motor.
4.) window shop parts to coordinate with your previously thought of ideas for your car
5.) add everything up
6.) COME back and post meaningful questions when you have some clue of what is going on.
Sorry for the rant... long day