Tone used my seat extenders as templates, I'm guessing they are just a higher quality bracket and install the exact same way.

Here are the basic steps to install (very easy)

1. Unbolt the seat from the floor
2. Bolt the extenders to the seat
3. Bolt the extenders to the floor

The extenders go under the seat between the seat and the floor. So, the seat sits on top of them. Hope this helps.

Here are some of my original pics (click on image for larger more detailed pic)