Woog-
I have a '51 Chevy 3100 AD truck. The frame I am using is modified, but my brother in law found a "saddle" tank from a C10 that with a very small bit of massaging fit well behind the Nova-donated differential. Estimate it is at least 15 galllons, but not as big as the Toad's van tank. Not sure that there will be enough room for an underbed spare. I liked the $25 price a lot better than custom stainle$$ costs!
