Well, you can use the muffler section with no modification. The speed muffler is a lighter and louder. I had a non-speed 2010 and then got the 2010 speed, so I messed with both of them. I even have the stock speed muffler setup if you're interested (it is just sitting in the shop collecting dust).
As for the rest of the exhaust, due to the downpipe, the speed mid-pipe is shorter than the non-speed midpipe. I have that piece as well, and a jig from my non-speed exhaust, so I was considering modifying my speed exhaust to fit a non-speed.
Does that make sense?
All the exhaust hangers and such are the same, so the only issue is the shorter mid-pipe, but that is easy enough to fix.