Todd - Probably not interested in a trade, but thanks anyway. I just saw your post because I went in to renew my Rennlist membership just now. I will probably put the C4 on the market in earnest in Ocotober sometime with an asking price of $22,500.00. It's a nice, original, straight, lo-miles car with a fresh engine. Not sure about particular upgrades come with the reman engines, but I'm guessing that the bad issues have been fixed.