[chris mc bride]

As for seatbelts on wooden floor I'm using oak and not realy concerned about seatbelt ,due in part to strenght of oak and I don't wear seatbelt nor do most my freinds if you have kids I guess it could be more of concern.
As for seat mounting to wooden floor I plan to fabricate a plate that allows it to bolt over two of the floors rails.You might could do same under floor for seat belt attachment points if concerned.