Adding an air intake took a little bit of imagination. There just is not a whole lot of room here. You need a decent filter. And I wanted to use some kind of MAF. I elected to upgrade to a blade type MAF/AIT unit. Supposedly more accurate with less restriction. The question is, where to put it?
This is the filter mounted directly to the throttle body. No real room for a stock LS1 MAF once you add the connecting tubes.
This is a aftermarket LS1 K&N filter. Clearly, no room for that here.
And this is a stock 2008 Corvette filter housing. There is a place for the blade style MAF/AIT sensor. But no matter how you trim it, this won’t work either. Although it appears to be pretty much a drop in for a Miata chassis.
Time to make your own. The 4 inch red silicone hose is available from a lot of parts supply houses; don’t remember where I picked these up. The MAF/AIT sensor mount and tube are available from Summit Racing, made by Spectre (I think). I had to experiment with a number of different configurations until I got something that would fit. 
The filter is connected to the silicone hose with a some 4″ duct I got from Lowes. I angled it a little by pie cutting and welding. I don’t think I like it, I might re-do that.
I also made a small aluminum heat shield, to protect from radiant heat from the head and headers. I painted the hot side with ceramic heat resistant Duplicolor paint. I did some testing, and it works best to place the painted side towards the heat source, and leave the other side bare.
It’s a tight fit, but everything seems to fit well. You can see that the coolant hose bypass is in the way again. I need to get rid of that.
I would also like to build a heat shield for the front side of the filter, and maybe a NACA duct on the side panel. It might help to paint the MAF/IAT sensor tube with ceramic paint, too. So much to do, and so little time.