I didnt read the whole thread... however I would like the OP said be in pro keeping the system.. esp the front one.. its a bulkhead system.. if losing that small amont of space it takes up is an issue then its likely lifestyle changes of "too much stuff"that needs to change vs taking out the system.. if no one rides in the back on a trip then you can yank the rear system and use the space for a minisplit or storage, etc.. these bulkhead systems are the best of any in my opinion.. if i ever found myself one or 2 of those indoor units i would be replacing the cdeiling hung units in my redbird and DEV bus..