After arket shifter mounting

I welded washers to the floor then bolts to the washers. Thought was just to reinforce the floor a little and give me something good to put a little heat in when welding vs just the floor pan. Worked really well I thought, will do it again if I have to mount another. Think I used 1 1/4" bolts and I ran a nut down on them before setting the shifter on so I could level it up.