[Tuske427]

First pic shows the cut edge of the foam with my electric knife. 2nd pic is my third arm holding it in place while I trimmed down that lower foam seal.

Lastly, I used one of those air filter lids to take advantage of any available airflow coming in as I had to use a 2" filter which isn't that tall and I didn't want to restrict the engine from air. I also don't like the idea that the air has to bounce off the filter lid and go around it to enter the engine. Seems inefficient to me.

All in I'm less than half of what a "kit" costs, and now my restomod GTO has what looks reasonably decent.