the evap box is not real hard to remove. just disconnect the lines, take the glove box out and unbolt. should slide right out. the exansion valve is inside. Important note: always use 2 wrenches on line and be gentle, fittings may be corroded. work them back and forth to loosen corrosion.
the reciever/dryer is real easy, remove grille and bingo there it is. be sure to replace any O-ring that you see(get from ac shop).
then take it to a shop to have it vac'd down to test for leaks and fill.

I installed my AC in my runner and it is really nice on those Hot/Humid days...........Karl