I'm fairly new to these conversions (two years) but I've found that almost everything the converter does is "off the shelf" parts. The most significant differences are in the design of the systems, quality of assembly, choice of materials, layout, etc. I've seen coaches that are almost a direct copy of what another converter did the year before but just not quite as well done. A converter that makes 20 a year has a different set of standards than one than makes 5 or one that makes 70. I think the market is still a "you get what you pay for" market -- well I hope so anyway. I'm biased having never owned another Prevost conversion, but I sure like the things that Liberty does.