[PGSigns]

From the little I can see in the pictures and your answers here are my thoughts. Rear bag pressure seems really high for the weight. It my be your bag placement but that could be a partial cause of a stiff ride. What air pressure was in the bags when the alignment was done? That the only place the alignment will be good. For what ever reason the front looks to have a lot of camber gain in the pictures. That will have an effect on the way it drives at different air pressures. What I was asking about the suspension being square is about the wheel base being the same on both sides and that they are square with each other. I have fixed a few drag cars over the years that were built out of square and they drove really bad. A well built and aligned chassis is easy to push on a flat surface. Post some pictures of the rear suspension and the thing on the ground at ride height.
Jimmy