I've been pondering several things too. One of them is to look at silicone hose couplers (see here:
http://www.extrememotorsports.com/gecat/hoses.htm ) and see what I can fit through the 3" hole in my fender and then snake down to a filter. Naturally, I can't get to that without screwing around with the fender well some weekend. I've also looked at CAIs for other cars that have multiple bends, such as for the Celica GT-S that put the filter in a similar place that putting one in front of the tranny under the battery would do on our cars.
The problem that I believe that people experience with dynoing CAIs is that you're just not moving enough air with that big fan that approximates what the car is actually getting when driving. And there's the rub.
