Finished the drop.
the rear leaf springs had been re-arched about 10 years ago and I had dropped spindles (2 1/2" ) with Eibach 1" under springs before this weekend.
But I decided to do the C Notch and had to do several additional steps
1. I had to remove and lower the front spring perch 2 inches I built a gusset and boxed it for strength
2.cut off and remounted spring perch on rear end after setting proper pinion angle.
Also had to notch the forward cross member for drive shaft clearance, (no picture as I did this after assembly when we noticed contact during the first test drive)
So we put it all together and took a picture for comparison
before the C Notch and spring flip
After
Once we had that all done I just did not like how flat the truck was, it measured zero pitch but looked nose high
So back on the lift and I yanked the front springs and pulled half a coil of height out of them by heating and flattening them out
Done