Wonder no more, because according to these pics sent back from Eric at SEMA, what you're looking at is the Mallett Solstice V8 with an LS2 6.0L V-8 engine, a.k.a. the 400-hp base engine in the C6 ...

So meteorological winter proceeds astronomical winter by three weeks, occurring on Dec. 1. Though the Winter Solstice is an annual event, Earth actually experiences two Winter Solstices each year.