Replace Roof AC units - 1992 WB40

[mbrund]

Well I lost another roof AC unit (cracked copper tubing, again), so
that's it, I am going to replace them now.

How do you get the lower unit cover off (these are the stock units
that came from BlueBird, so they are the vinyl covered lower
covers)?

I can not seem to figure out how they are attached so I can get to the
two rear most bolts through the AC unit.

Still debating between the Dometics or Carrier units. Probably go
with Penguins so I don't have to change a bunch of wires. But I will
be stuck to what I can get this week as we go on our trip starting
next weekend.....