By the title of the thread I thought you were referring to the old school Suburban seats install. 20 years ago. I had 3rd row seating complete with safety belts in my M1009. I used the 3rd row seat and mounted it to the floor behind the second seat and used the brackets and anchor points for the seat and belts. Never drilled another hole in the floor. Spare tire storage was on the roof rack. I still have the M1009 sitting wrecked in the field. the 3rd row seat is still at my barn under the fore bay. Very comfy spot to sit and wrap wires, make/repair harnesses , wheel sanding and do light fabricating. It was a blue vinyl seat and has held up well. Good luck with the install. If you use flat bar and elevator bolts the world is easy and easier on the vehicle. Sanding and painting are also key to make a good job look better.