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Brand-new first-generation Mustang body uses higher-grade steel, modern welding techniques and the latest rustproofing technology.

The original Pontiac GTO may have rarity value, the Dodge Charger takes the performance credentials and an early 'Vette is cooler than a polar bear's paws but, if there is one car that symbolises 1960s Americana, it is the first-generation Ford Mustang convertible, made from 1964-1966.

It has become such a cult icon that leading classic-car insurer Hagerty's has more Pony Cars on its books than any other model.

But every original example is now more than 45 years old and the majority are rusted beyond repair - so Ford has begun producing original first-generation Mustang body shells, brand new, that can be made into '64½, '65 or '66 models, depending on what trim, engine and transmission you fit.

But it's not as good as the original, says Ford Restoration Parts licensing manager Dennis Mondrach, it's better, because it's made of higher-grade steel, using modern welding techniques (and more welds!) as well as the latest rustproofing technology.

You can either use the engine, transmission, electrics and running gear from an existing, unsalvageable wreck or build a complete new car using Ford-approved restoration parts.

Mondrach says nearly everything you need to build a complete, brand-new 1964-66 Mustang convertible, except for some small body trim parts, is available from classic parts suppliers.

The finished article: A 1965 Ford Mustang convertible.

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In order for Mondrach to approve an aftermarket restoration part (and his is the final say) its fit, finish and quality has to be as good as or preferably better than the original but, if you're prepared to work to that standard, he'll allow you access to Ford's original technical drawings, blueprints and parts specifications.

A new Mustang body shell will cost you $15 000 (R121 000) but it can cost a lot more money and months of labour to cut all the rust out of an original body and weld in new panels - and in any case the result will be neither as straight nor as strong as a new one.

The Ford Mustang debuted in April 1964, and became an instant classic. Nearly 1.2 million (including 174 000 convertibles) were sold before its first redesign in 1967 and, 47 years later, it remains America's most popular postwar classic car.

Find Ford-approved Mustang restoration parts