Update, brackets did NOT go out Friday as promised - we are working this weekend to get them out Monday and Priority Mail (2-3 days) tracking numbers will be sent to all. Sorry for the delay.
Here are the basic steps to install (very easy)
1. Unbolt the seat from the floor with a 14mm socket wrench (maybe really tight)
2. Bolt the seats to the extenders with the 3/8” grade 8 bolts, washers and prevailing torque nut with a 14mm socket and 14mm wrench.
3. Bolt the extenders to the floor with the new Grade 8 bolts and washers with a 15mm socket wrench.
The extenders go under the seat between the seat and the floor. So, the seat sits on top of them.