I would
up and swap & $1k+ but I have 18" 08 GT (fits my brembo's) chrome roadster wheels. 5k on OEM tires (and car) but if your trading it then you probably don't care. You may loose $100 on trade in if they notice. That's a guess but you can do kbb and figure that out.
I'll cover the difference to.
I may be up there next weekend anyhow.