It looks pretty good like this too. Maybe if you can, you can combine this body with the engine in the same diorama, make it like a full engine overhaul diorama.

IMO, if you doubt about it, then don't sell it. You can find more money, but once this is gone, it usually harder to get them back. Unless you're in need of fresh money right now, then I'd say, keep it.

 

If I remember you already have a complete CMC Testa rossa right? I would just put the engine next to the model to display everything on the red base, it would looks great! As for the price you would get...well it would not be THAT much, after all you only added a red base and 4 axles so its not a complete diorama imo

 

Thanks guys, I'm seriously giving this thought!
Ironsim, you are right, especially as I would only sell the body & Chassis, the base and axle stands are staying! I already have two other Testa Rossa, though one is for sale now.
I'm googling crates, tool boxes and maybe an engine hoist!

Watch this space as they say.....

 

I say keep it and try to make into a full blown Diorama with the extra pieces you are eyeing up.