Hey Joe, (GrandCheapSkate)
What's the story(rarity) on that LL flat Monte Carlo Jeff Gordon car with the Rainbow paint scheme?
Rich,
Without having my cars at this location, I can't match up that Dupont with the cars in my collection, although I am sure I have it. The problem with the Dupont car (and the other Hendrick cars) is that Lifelike has produced so many of them with (slightly) different paint schemes that it is impossible to remember where they all came from unless you either label them or keep them in the package.
My guess however, is that this car came from a twinpack, either the 9031 (there were two versions - 2006 and 2007), twinpack 9832 or one of the three versions of twinpack 9835. Right now, that's my best guess. When I get a chance to check, I can give you a definitive answer. But don't rule it out as a set only car.
A couple years ago a very serious Lifelike collector sent me a photo of all his Dupont cars. At the time, there were 14 variations - and a few more have been added over the past 3-4 years.
As to rarity, I would imagine the twinpacks pop up on eBay every so often for common prices (around $30). You might try contacting Bob Molta at SlotCarCentral and see if he has one.
Joe