I am planning on doing a 3.90 conversion in my car. What is necessary in doing so. It is a 98 gl atx 2.5 duratec.
I know I will need the lower end of the 3.0 and upper end of a 2.5. Now would it be post 99 3.0 and svt heads ..what ..I just started looking into it and am now ready to execute but instead of trial and error I will just take your trials and not make any errors.
thanks
DJ