Intake Manifold Recommendation

My knowledge is from working at a Dodge dealership from 1990 until 2009. In that time I have seen the shop manuals incorrect many times. Seeing the pic you posted for the 5.9 is odd saying it had a 1.88 int valve. So, I went online to several factory dodge parts sites and looked up the 1996 5.2 and 5.9 heads and intake valves, the part #'s are the same between the two.