I changed tires and that made a big difference. The Falcons are load. I went with Kohmos.
I have been looking to do the same thing. First is to find where the noise is coming from. Have someone else drive while you listen for noises. If can use a tube held to your ear to help locate noises better.
If a panel is vibrating or ringing you don't need to cover the whole thing. A patch in the middle should help reduce it's sound.
Secure anything that is loose. It's obvious but look for the unknown stuff.
If you changed any bushings you made more noise come in.
Be careful with open cell foam, if it is in an area that can get wet it will rot and cause rust. Also some of the foams will brake down to dust after a year or two.
I found a good mat used for toolbox drawers at Harbor Freight Tools. It has great noise absorbing properties.