Officine Fioravanti Testarossa is an ’80s Ferrari without the flaws

For those wealthy car fans who adore the Ferrari Testarossa but can't live with all its 1980s idiosyncrasies, Swiss-based Officine Fioravanti has a solution – a glorious retromod that blends the latest modern tech without detracting from any of the original's character.

The subtle mods for its first customer car based on an early Testarossa Monospecchio (with high-mounted single door mirror) include a heavily reworked version of the original's 4.9-litre 180-degree flat 12-cylinder engine.

Thanks to changes to the block and new fuel-injection system and exhaust systems, peak power is now said to be 375kW – 88kW more than before – and the upgraded engine is able to rev to an incredible 9000rpm.

A new ECU also allows the driver to switch between engine maps within the cabin using period-correct switchgear.

Performance figures have not been revealed, but the OF Testarossa has been tested up to speeds of around 324km/h.

Weight-saving is another area the Swiss firm has worked hard on, with the Ferrari losing around 130kg to bring its total mass down to about 1580kg, thanks in part to a new exhaust made from Inconel and titanium.

Improving handling, the Testarossa retromod gets a bespoke suspension set-up all around, including electronically adjustable Ohlin double-dampers at the rear.

New adjustable anti-roll bars have also been added, while upgraded six-piston Brembo front brake callipers and bigger four-piston rear callipers dramatically boost braking power.

There's even a new variable ABS system and a 12-stage variable traction control system for those who venture on track.

Boosting grip are wider new 17- and 18-inch wheels that save weight and match the original's design.

Ensuring the upgrades remain under the radar, the standard Testarossa’s exterior remains untouched.

Similarly, the interior look has been preserved but most of the switches have been replaced by higher-quality materials that also hide modern tech.

Toggles for the variable exhaust, suspension and safety systems have all been integrated within the existing dash and there’s even a bluetooth headset modelled on an ’80s car phone, plus a small display for Apple CarPlay.

It's not been revealed how much was spent by the owner of this particular Officine Fioravanti Testarossa but it’s thought a seven-figure sum was invested to convert the original Ferrari – on top of the $170,000 or so it cost to snap up an early Testrossa in Europe.