costly I am in process of a Co$tly conversion. It all seems like you can do it cheaper there is nothing to gain buy a good solid TT car and improve that one you will save in the long run. I have a ton of money just in my motor looking to launch this car in Spring 09 I have owned the NA since Dec of 04 and have driven the car maybe 15minutes before I tore into it and it is still in process of the swap.