Ok, check out these pics and see if this looks a little better. 1" steel tubing welded to the tracks at the front, 1-1/2" - 2" at the rear to make the seat set at the proper angle. All 3/8" grade 8 bolts, nuts, washers.
The picture under the car shows the reinforcement underneath. Pieces of 2"wide 1/8" thick U-channel, spot welded to the floor from inside.
Last picture is the pieces I'm working on for the passenger side, have to raise it an extra 1/2" for the wife who's a little on the short side.
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