Just wanted to post some more info about Rennline for you. They're top-notch quality and you wont be disappointed. Their mounts are a two-piece design (unlike most mounts on the market), which allow you to remove all of the visible components of it in literally seconds so you can retain that "factory" look if you so wish. This mount also allows you to make your seat adjustments whereas other mounts are rail mounted and fixed. Install is very simple, should only take a few minutes and fits a wide range of seats from factory complex seats to race seats. I hope this gives you some more input on the EZ mount.
Rennline EZ-Adjust Fire Extinguisher Mount, Black
Video of how it works: