You can if you really want to but there are a few problems. First, you cant get them, that I can find, unless you want to buy a new board and scavange the double terminal from the board. Second, the terminals are riveted to the board, so you'll have to drill the rivet and them install a new rivet of the correct size. And you'll have to do both operations with the existing board attached to the speaker. And you have to desolder and resolder the tinsel lead anyway.
To replace the whole thing is easier and you don't need the rivet tool or rivets. Desolder both tinsel leads (use a heat sink). Drill out the rivet that attachs the board to the speaker frame. Attach the new board with small screw, lock washer and nut (or rivet if you have the tools) solder tinsel leads to connectors ... done. It only takes a few minutes.
