24 seems pretty big for the small port. im running the 21 dell on my small port. let me know how it works out with the 24.
as far as the intake goes, unfortunately you cant do a 24mm intake, it wont fit between the studs lol. i made an intake out of 1 inch tubing, which is about 25mm outerdiameter (~23mm inside) and the bolts hit the intake and would barely turn. so what i did was use the intake that came with it, and JB welded a piece of my 1 inch intake on it. It fit right over it. Its kinda restrictive, as it bottlenecks down from the 23mm to whatever the one that comes with it is, but it works.
idk how big tommy's intake is though. maybe it bolts up better because of the way its bent. or maybe he drilled out and tapped his case so he could use allen bolts.