well, you didn't mention anything on condition or maintenance so assuming your is doing well, I think it would be better to sell as one-piece, if we're talking about something that has a LOT of mileage or needs a LOT of work, maybe part it out
who knows, there are several people who want a second VX, even if it needs work i think it would sell, these aren't the most difficult things on which to work
good luck, I'll have to keep watching if you do end up parting it out