Just a thought, will the front end be too wide for the fenders to fit properly? Some trucks end up with the front fenders radiused which doesn't look quite right or the tires stick out past the front fenders. Dunno, might work OK on this application.
I think your question is regarding narrowing the subframe. If you do narrow the subframe the centerlink will have to be narrowed the same amount. My vote would be to plate the difference and not narrow the subframe.