replacing the evaporator will certainly be one of your "funner" life experiences. unless, of course, you have already have had this "fun" before.
May fire ants seek you out as you lay sleeping and unawares.
The FSM talks about a “cabin air filter” on rear AC vans with “3 Zone Temperature Control”
and a “push backwards” latch to allow releasing this filter from its housing,
but I cannot find the latch even though the plastic shows a long rectangle that looks suspiciously like the bottom of an air filter element.