I found the one at Amazon by a search on Yahoo. Is their inlet an aftermarket unit or are they taking the stock inlet and porting it. I put an Accufab on my buddies 03 and the stock inlet has a lot of problems as far as air flow. It has two bosses casted in the roof that look like tonsils to allow the IAC to bolt up to and it has indentions casted in the corners for wrench clearance. The Accufab is casted as a clean smooth bore through.
that's a BilletFlow plenum that comes with the TB from Amazon, much larger cross-section than stock and smooth bore...very nice piece of work...if you then port-match it to the blower inlet you can get even better flow