i just did one, you will need to get the a/c pumped out.

remove the lines (special tools)

remove the ecm/pcm, remove heater hoses, remove the 4 bolts holding the box on from the out side and the vac line.

now the [Edited by Moparts - Family Friendly Site - Keep it clean], remove the 5 screws holding the dash near the windsheild, follow the manual.. I was able to loosen my dash and pull it back far enough to get the box out, dont forget the two screws holding the box on the inside.

after you remove the heater box, you can now bolt the dash back up, baypass the heater box by connecting the hoses together, and then you should be able to drive it.

it only takes a few hours to do the complete job..

i didnt change my evap..

good luck