EugeneTheTJ
Tar Heel
Angle is probably about 75-80 degrees. I spoke with Dirk from DPG about this and in his opinion shackle angle is not as critical as everyone claims it to be. Obviously you don't want the shackle angled out or straight vertical. All the shackle relocation brackets are just another way for companies to make money, in his opinion.
My springs still need to settle some more so the angle will improve, but at this point I have nothing to complain about as far as ride quality goes.
I disagree with the money claim but I definitely agree with the severity of angle aspect. As long as you aren't vertical (or past vertical) you should be okay.