I ended up sawsalling out seat rails and mounting steele frames under the car and the new seat mounts where the frames where sandwiching the body pan. I left the passenger seat frame stock so now my wife and I look eye to eye for a change. If you go back and look at my posts of my car ( looky what I have ) you will see the seat hieghts of driver/passenger. I also use the sparco three sided steering wheel to gain knee room. What ever you do DO NOT WELD NEAR THE TUNNEL !!!!! The gas lines ride on the drivers side and they will melt .
1986 blk 930
2000 bmw 3 series convertable
1996 Silverton 312 sedan bridge