Your seat tracks are already sitting on aluminum blocks as spacers. They are to slightly tilt the seat, and to hold the tracks above the floor mats. All you need to do is make new, taller ones and purchase longer metric allen bolts. Then if you have early 3-piece seats, you can slot the back strap holes and allow the seat back(s) to recline or pull them upright. If you carry a metric allen wrench, they become adjustable while underway. Worked for me...
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