I've been running this for over 2 years without issue. No CELs, no issues whatsoever. I know it's not the prettiest thing, and I don't care, it works and that's all that matters to me. Anyone wanting to do this, all I can say is Take your time. The edges are rough because I didn't have my dremel, but I made do. I think mine's worked so well because I left a small amount of the flange at the end, I did so in hopes the air would hit the MAF with the least amount of turbulence. I left the bottom of the air box installed, and the snorkel, the filter sits quite nicely on it, plus the added air from the snorkel, and the piece of mind that water Will Not hit it. 
The pics aren't the best, my apologies, but they'll make do for now.
I'm sure I'll get flack from some as it's not pretty, but, it works, and has so for a couple years.