Finally got it done with the stock airbox. I was able to get it just behind and below the passenger headlight plug. I used a Mishimoto compact baffled catch can which is pretty small. I used the matching drain kit, but had to replace the stock straight drain fitting for a 90' fitting. Downside is they recommend not filling the can above the baffle for it to work correctly, which gives me 2 oz (plus the drain line which I calc'd at 1 oz).
I have a bunch of pics I took, but not enough posts to post them. BUMMER! :frown:
I created a base for it to sit on in CAD (SketchUp) and printed it out on my 3D printer using ABS (both are black so everything looks stock). I used Gorilla double sided super tape to mount the can to the base, and the base to car (good stuff). I used 3/4" plated steel from Lowes to make a bracket to run straight up to the headlight support and painted it black. Nice and solid.
Still bummer about the pics :crying:
Drain line runs right between the ww fluid bottle and the stock airbox then down. I ran the IN line behind the power steering reservoir and under its bracket, under the stock airbox bracket, between the shock tower and fuse box, then in front of the battery. The OUT line ran between the airbox and the power steering reservoir and under the airbox bracket, then over to the surge tank. Everything flows nicely downward.
Overall, I'm super happy with it. Will check it in like a 1k miles.