No Australian car made after 1990 will be a collectors item and will not increase in value like we have seen over recent years, and have also seen the complete collapse of over recent months. Muscle cars have dropped dramatically in prices, we have seen the peak, and it won't come back anywhere close to buying a GTHO for 750+k EB GT and EL GT have all dropped in price, not long ago people wanted 60k for EL GTs, now they are cheap as chips, the T series are cheap as chips. A Cobra of a GT 40th should sell for less than new, its not special at all, rather they are run out models to get rid of stock. In affect you are buying the last of the crap before the new comes in. Tell him he's dreaming!