air cleaner solutions?

Here's the more or less finished product for what I've been working on. In flat black primer for the time being, but will probably paint it body color one of these days. Need to fill in a few more places with bondo to smooth it out better. Tried it out and it seems to run fine from what I can tell compared to the other setups I've had. It does just barely rub the hood supports, but not enough for me to care right now.