Looks like the same one that came on my truck. I assume it was installed by previous owner. Not sure if he goofed on first hole or if those were for a different original bracket. There are two bolts but I took this shot blind by reaching under. Hope it helps.
1957 Chevy 3200 Daily Driver PS, A/C, Tilt column, Rebuilt 350, Rebuilt TH350, Reupholstered Bench Seat, sound proof/insulated, LED headlights/taillights/backup lights/interior courtesy lights. Follow in the DITY
