[Mike Drew]

I have to ask the simple question--why?

One could *barely* make a case for such a move in Europe, where Ford engines aren't as commonly available. But in the USA, you would never be able to get anywhere near the performance of a well-built Ford out of an Audi motor. So, the Ford offers:

1) The same performance as an Audi for substantially less cost, or

2) Substantially more performance than the Audi for the same cost, and most importantly

3) It's the only 'right' motor for the car.

Finally, installing a non-Ford motor would substantially hurt the value of your car; I would go so far as to say that if modifications are required to adapt it, your car with an Audi motor would be worth less than your car with no motor at all.