MOPAR things I learned the hard way..

1.LH thread studs exist
2. Most solid roller lifters don't drop in a sb w/o clearancing the block
3. Header bolts are into water jackets
4. Slant/sb/bb all have unique bell housings
5. Chrysler seemed to change something from one moder year to the next on every car they ever made.

Those are mine off the top of my head :)