Confused what to do with a 5.9L serpentine setup

black954 said
I'm not sure if mine is the 117A or 136A but I believe the cases are the same. I tried to go the same alternator mount as you but the van PS pump mount caused the belt to rub the water pump pulley because the idler pulley locations on the A/C and non-A/C alternator mounts are in different locations.

Ok, here is some more interesting info.... rockauto pictures and data to the rescue! There are at least two case sizes, and 125 vs 137mm, and they have some units on the later model years that have a side post for the power that should in theory fix the valve cover issue!