Petes engineering, supercharger

G'day I found a running big block chev with petes eng co. Montgomery supercharged engine, they want 40,000 US dollars for it, which by the way it's in New Zealand an that's about $ 68,000 -$70,000
New Zealand dollars. It's Nostalgia .
What do you people think, I've only got maybe 1 to 2 days to make up my mind to buy it or go's away for another 20 years