Unplanned time off with no pay or unemployment options, I decided to get some boat stuff figured out.
We have a 2005 with 4 upper cabinet doors that did not come with a microwave. I didn't want to cut any wood, but we did want a microwave now that we have LiFePO4 batteries.
My 'solution' was to remove the cabinet face frame, install the microwave, and replace the frame. There are 8 screws under wood plugs that attach vertically into the deck, the two screws where the microwave is located were not replaced, and I'll leave the wood plugs out to make future removal easier. The face frame was glued to the lower shelf, but poped right off without issue.
The microwave is a Danby designer from amazon. It's the usual 10.2" height that they only seem to make now.