I got a black covered one, 3" wide, for a GFI S-10 Expo. They are available in wider versions too.
If you get one of these for a GFI, note that the bottom of the right (changer end) end plate is longer due to the area where the return springs are mounted. That means that the mounting bracket on the changer end will be about 3/8" lower on the leg than the one on the key end. However, you can mount the bracket on the key head end 3/8" below the end plate to make it level. If desired, you can use some shims to make the pad higher on the changer end (or both ends) if needed. It's an easy fix, if you want the pad a little higher. I used 2 3/4" pieces of an old wooden yard stick with 5/16" holes drilled in them 1 1/2" apart. That worked well. You will probably want to use longer machine screws if you use shims. I used 1/4 20 - 1 1/2" stainless steel machine screws. The OEM screws are 1/4 20 - 1".
