1988 307 belt Adjustment?
 

I have a 1988 big body with the 5.0 307. I just bought it and the last owner bypassed the smog and changed how some of the V belts run. I am looking for a diagram of how the 3 should go. I believe one goes from main pully to the fan and power sterring pump, but I can not find where you adjust the Power sterring up to tighten the belt. So any help with that would be great.