14.45 with 12 sec combo... HELP

you could try running it stock, the one I had - had casting flash in the runners, and a very small/restrictive plenum..

If you have a cordless drill - I used that and a carbide burr but a grinding stone would do the same I'm sure, not hard to do if you take your time and don't be aggressive - just take the gaskets and trace the runners with a marker, and you'll see how much can come out of them/ how restrictive they are

Here is pics of my ebay 302 ford air gap intake before porting -