I used my old pan, bought a HF pneumatic staple gun for $22, fairly easy to install after watching their video.
If I were to get another I'd order the softer foam, After a few rides it wasn't breaking in like thought would so I took the cover off and cored the foam and been pretty happy with it.
I now ride as long as I want with out being in pain.
The stock seat is about 6-1/2 and Seat Concepts measures 9-3/4 wide.
I put one on a buddies XR 650R this summer and now he isn't standing up every 5-10 miles digging his undies out of his butt.