next mod was the AC,,, I won't go into detail on this as there are numerous threads on the AC mods...I do mine a little different, besides the normal mods,
I find that the stock grilles are too noisey and too restrictive..so what I do is get rid of the plastic little round ac griles and the chill grille... chill grille got my coach down to about 90 something in the vegas heat... so I block off the service (cold air) and seal it so all the air comes out the reg.s next I open up the return air to twice the size... DB's drop and unit gets way cooler...I put residential metal reg.s and return grille, with all the mods, I have seen 44 degrees coming out of the register,and it's super quiet.. I can set the thermostat @ 75, and it will cycle off when set on automatic