On my Les Paul, I changed my bridge, tailpiece, posts all to rolled steel. It makes a huge difference in sustain. Many les paul traditionalists get aluminum tailpieces to be historically accurate, but I hated them, ruined sustain.
I had a dream last night that I went to a business seminar and Pio was the "MC". He kicked me out because he "don't like the industry you work in" he didn't know that I was in fact teh Booth though (but I knew he was the Pio deep inside my mente.)