Yeah, I don't know why the pictures have disappeared from the original post. But in the end you'll have to put an elbow on the drain tube nipple to fix the flow back problem that soaks the carpet.
You can get it from the dealer, or Tasca Parts online.
The elbow goes on the drain nipple like this ....
Pry this plastic shield off that covers the nipple, you won't need it anymore ...
Only tool needed really is a long screw driver from Home Cheapo .....
Boil the elbow in water for about 15 minutes to soften in up just before you stick it on the drain nipple. When it cools it will tighten up on the nipple and never come off.
If you just want to clean out the blower box and drain you can drill a hole to spray some cleaner in there and then flush it out with a utility sprayer wand with minimal mess. Use a rubber plug or a piece of black duct tape to cover the hole when you're done.
On the Gen2 Expy's the real fix is the elbow installation. ( At highway speeds, the under hood air pressure causes back flowing of the condensation drain and the drain water flows back around the outlet nipple and into the firewall insulation and carpet....)
The evaporator is located on the far left side of the box. The drain hole is in line with the hole drilled here in the box.