Named after Iso company boss Renzo Rivolta, the IR 300 GT was brought to fruition by two of the most influential Italians to ply their trade in the automotive industry. Engineered by Giotto Bizzarrini (of Ferrari and Lamborghini V12 fame) and penned by Giorgetto Giugiaro during his stint at Bertone, the svelte 2+2 ...