Rear and front shocks are pretty much straight forward, since the frame is unloaded, I set the angle at 26 degrees. When the frame becomes loaded, the shocks will settle to 30 degrees and give a pretty decent ride. The more vertical the shock, the stiffer the ride will be.
Here is another close up of the rear spring mounted and the shock tacked in place. I used only one bracket, 1/2 in by 2 inches wide and whatever the shock bolt size is. In this case it is 5/8ths inch diameter. Also notice how I hold the rear end up and in place with my homemade stands.
This picture shows the panhard bar and the crossmember and spring perch for the rear end.
More detail of the rear, this shows the angles used for the panhard bracket on the rear end. I make these brackets in two pieces because it is easier to get everything true, square, straight the first time. If I were to heat and bend, I could wind up heating and bending several time before getting it the way I want it. I use to use the hot wrench method, but the two-piece method is actually faster and more accurate.