2nd row "3 person narrow seats" from a new ford transit purchased from norcal vans and shipped by fastenal. $350 including shipping! Incredible luck that 4 or the holes in the brackets lined up with the factory holes though the "ladder" portion of the bed frame with 1/2" grade 8 bolts and washers. I over engineered the rest with over a dozen 1/2" 2 1/2"-3"grade 8 bolts with a combination of uni-strut and steel plates that I galvanized on the underside.