There were other “vintage” cars besides Cliff’s 1976 Cosworth Vega at the SPOKES 2009 Autocross #5.  There was a father/son team co-competing in a modified 1968 Chevrolet Camero.

By both the looks & sounds, you could definitely tell this car was no longer stock.

Neither Paul was very forthcoming about the mechanical mods to this aggressive sounding [...]