Top 5 worst A-body repairs/restoration jobs

Installing a Classic Auto Air Perfect Fit unit in a 67-72 A Body by following their crappy instructions. The instructions were SOOOO poorly worded and many poor pictures! The system is awesome once it is in, though.
No ****.....
I did an install in my own '70 Charger. The drawings were fair but the instructions are written for a person that has done this type of project before. There are assembly steps that are not covered and obstacles that are not mentioned.