4-5-6, I agree, however what I mean is that I will use the existing wear marks on the swaybar with its bushings to determine its location of not only the frame but the A-arm.
If I take the swaybar, its brackets and bushings and place the assembly up to the frame and A-arm, this should give me the left/right location on the A-arms and then from that its location to the frame.
But like I said, only once I have the engine back in the truck.
Thanks to everyone for their ideas, photos and comments.