^ This. If it's the car from your "garage" link it's a 73. Did you put the spacer back in the rear bottom corner? The cover should be perpendicular to the ground like a T. If there's a weird angle to it, you may have left out the early car spacer.
It's just a single spacer. It's not one on every corner. You do use additional spacers if you use polybronze bushings, but not the rubber bushes.