i was looking through the new issue or POWERBOAT magazine a few minutes ago and noticed an article about the 8.1L intake manifold that arizona speed and marine offers for it. there was a post on here a long time ago about it but i never really heard much about it. Well, they claim a 200HP...that's right 200HP increase with this manifold and their computer program with it and their 85mm throttlebody. seems kinda high but it's right there in print. just thought i'd let the 8.1 guys in on that cuz that would be great to get a 200 hp gain from something as easy as an intake manifold swap. it is 1600 though.