[Redrider2000]

I used to work at CarMax in the shop and yes they will buy a modded car. They will not sell it on their lot though. They send it into the shop after they buy it and determine how much money it will take to put it back to stock. If that dollar amount surpasses a certain amount they just put it through their auction they hold once ever 1-2 weeks. They just start the the bidding at what they have in it. Another dealership come in and buys it and sells it on their lot.