I had one on my 07 M-1000, it works fine and no you won't go back to stock but the base kept coming loose on me. I had to drill and tap new holes into the bulk head and use locktite to keep the screws from coming loose, the instructed way of installing it uses two wood like screws and they will never hold.
I am going to use a Black Diamond Xtreme intake on my 09, I like it alot better, it installs like the factory intake and also has a spot to mount the ECU.