Conversion Van Side Window Replacement Conversion, simply meaning “PITA,” or “lots and lots of screws,” will often make a new technician cringe. Some techs that have been doing auto glass for a few years may just mildly be annoyed, if at all. Hunting the screws that hold the paneling to access more screws can sometimes take awhile. These are “homemade” customizations to the inside of the van. This particular piece of glass needed to be shipped in. Often with a lot of time, struggling and patience, these jobs usually finish off looking really nice.