Hood closed fine! As far as I know that is the first set of twins on a 03 or newer truck. Those pictures are from Oct/02.
The best thing about the setup in the pictures is that it uses the stock manifold and the HY-9 as well. It also lets you keep the battery in place. The air cleaner fits in the same general area as the factory one did. It comes up from the Bht3B down low and sits where the old airbox did.
With some paying that setup is good for about 70psi or so. It made 619rwhp, on dope, pressure w/timing, injectors and a 5".
Quad