Have you considered selling your car yourself on Craigslist, eBay or cars.com etc for retail? I find the dealer, at best will only offer wholesale or a bit above if motivated to sell something normally at the same time. If nothing else you may do lots better trading for a SRT 392 and do the trade / purchase together as dealers buy cars at auction and pay nothing so why be motivated to do much of anything for you Monday if you are not buying Monday? My $002.