I have my T5 behind a 235. Have the drive shaft. Have the rear end. Now I need to get the pinion angle set right.

Is it true that with leaf springs the angle should be 5 to 7 rather than 3 or less?

Also, the angle has to be set with weight on the springs, so the truck needs to be on the tires and on the ground. But how can I compensate for the kind of weight that will really be there when the body is on?