Just want to be sure I'm understanding correctly, this Dakota set up is sitting inside the original F body "frame" rails and your going to attach to them, correct?

OR, when you cut your F body k-member out, you cut out the frame rails as well, and all I am seeing is the inner fenders for your F body?

If you are doing the 1st one, I believe your going to be OK.

If your doing the 2nd one, my concern is that you will need some sort of boxing or tubing outside the Dakota subframe. That subframe is designed to attach to the Ford "C" channel frame for support. If you cut your frame rails out, what will provide the support for the subframe? Gene