What rear shock angles to run?

Using the upper factory mount I wouldn't even think would be an option considering the rear end Is moved back but this is my first time doing this so I'm not 100% about anything lol! I guess I'm basically going to be moving the upper mount back 1.5 inches to keep the angle front to back as close to stock as I can. Just not sure if I should mess with the inward angle at all or find out what the stock angle is and put it there.