Sell mods return to standard.
Lets not turn this into a for sale thread though please
Personally if you're only interested in making money then obviously seperately BUT if you're after a quick sale or just a sale to an enthusiast the chances are they'd be more interested in a well mod'd enthusiast owned example... well, i always am!
You're in a very small minority though, for most cars and the Trophy particularly the biggest market for buyers is standard cars.
Sometimes I think it's a psychological thing though, as people like to make "their" owen changes even if they're the same changes!!! lol