Mounted the seats - this was a real pain as the Sierra has a cross member that gets in the way.
I had to trim the seat bracket to get the front of the seat to sit in front on the crossmember but still allow the seat to go low enough for good ground clearance. Maybe it is just the seat I chose though? It is quite a wide seat (for my mega ass) and needed the high sides so the side intrusion bar could still be legally mounted high (it must be lower than the seat).
