I have all my trunk panels out and it is noisy inside. While I look into the headliner replacement I am thinking of adding some sound deadening to the car.
Waldig added some to his roof while he had his headliner out, so I may add some there. The rear fenders could take some as well, a bit awkward to do there though.
DynaMat seems the favourite, never use any thing with asphalt in it, maybe you cannot buy it these days though, it smelt forever like a tar job on the street I’m told.
Waldig did a thread on his roof, worth looking at if you have not seen it.