The Billy Goat is not a Chevelle, but a GTO, pretty close. It has 245 / 35 / 19 front and 345 / 25 / 20 rear. The rear tires are a full 1 1/2 shorter then the tire your looking at.
See more pics / angles here.
http://www.prodigycustoms.com/projec...s.php?album=15