some of the fixtures in the rv's are fine for bus conversions. i have used rv pieces since 1970 when I built my first bus. items like the stainless sinks, bath sink, are often just right, and i have never had any problem. I normally grab holding tanks from more than one rv, as the last two busses i had over 150 fresh water storage, not to mention two grey n black tanks, two types of water heaters,etc. even things like the bathroom door can be a rv inside door.... i have lived in two of these busses for yrs, and stuff doesnt fall apart as mentioned...
Jesus Christ... Conversion in progress.