73 Dart Swinger. I gutted my interior, ground out a little rust, primered and painted the floor. I have new sound deadener and carpet.

The sound deadener is 4 pieces,
1)a long rectangle with some "tabs" on it,
2&3 )two smaller rectangles. one with tabs, the other without, both have some slight curves on the edge
4) one that looks like it probably goes somewhere on the driveshaft hump.

Does anybody know the correct configuration or where each peice goes? It is not as obvious where these pieces go as I thought it would be.