I’ve used 3 pairs of them. All -1 high deck. Two different cars. Two pair needed slight mods to the left side. All depends on where the engine sat. The left rear tube goes over the steering shaft. That can get tight if the engine is low or rearward. Torsion bar clearance was tight on the last pair. I moved the middle of the #1 tube on the current set. Was pretty easy. Plugs are accessible by reaching under. Number 5 is a little tough.
Doug