Stock suspension racers

very easy and inexpensive route to brace that seat without a cage. I did this in my old 67 belvedere street/strip car until I finally had to get a cage as the car got faster.

on those plastic seats you know where the rectangle like indention is about where your upper back would be? make 2 rectangled plates out of some 1/8th'' thick steel that will fit inside the indention on the front and rear of the seat. now mark and drill two 3/8'' holes side by side in the plates. use the plates to locate where to drill the holes through the seat. so what you have is a plate on each side of the seat so that you can tighten bolts without pulling through the plastic.

now, if you look at the floor pan right behind the seat you will notice that it goes from horizontial to vertical where the bottom for the back seat sits. in the vertical part of the pan you will do the same with 2 plates and bolts as you did with the seat. one plate inside the car and one under the car bolted together. now all that is left is to weld a 1''-1.5'' peice of pipe or square tubing from the plate on the back of the seat down to the plate bolted to the floor pan.

I made this brace in about an hour in my shop and painted it. it looked great in the car and was solid as a rock. I bet I made over 200 passes with it until I put a cage in, and it never flexed the floor pan one bit despite some high 1.50's sixty foot times.