At one point in time, this was a Corvair

[absintheisfun]

It has become. . .the Jaguair! This has to be the most insane fab job I have ever seen.
http://www.corvaircorsa.com/V-12-01.html
https://static1.pt-content.com/images/pt/2010/08/jejagv12-1.jpg

[Rhino]

He stroked the crankshaft nearly a quarter-inch to increase the engine's displacement to 347 cubic inches (5.69 Liters), and installed Chevrolet connecting rods.

That is some pretty nice work. On top of all that, the engine is still at least partly Chevrolet. :)

[John Wright]

Pretty good disguise...looks like a factory Corvair from the outside.