I just installed the Atwood 10 Gallon LP/110V in my Overlander. Very simple. No major modifications necessary. I did however use the new door, as the original one would not work.
The electric is a nice feature since it saves LP when hooked to shore power, and the recovery rate is supposed to be faster with electric.
I believe (really don't want to remember) that I paid $338 with shipping from
www.rvcatalog.com. I have purchased a few things from them, and they got here very quickly.