One of only 100 RHD Turbo Cabriolets with just 47,340 miles Following the international success of their nimble 924, Porsche designed an all-alloy, 2.5-litre inline-four for their new 944 which they planned to introduce in 1982.

Their talented engineers were able to produce a very smooth running four-cylinder engine by utilising two counter-rotating balance shafts running at twice engine speed.

These carry eccentric weights which produce inertial forces that balance out the unbalanced secondary forces, all a bit technical but the result is a large four-cylinder engine that feels as turbine-smooth as a six.

Cosmetically, the 944's bodywork was revised with wider wheel arches (similar to that of the 924 Carrera GT), a fresh interior and upgrades to the brakes and suspension.

With greater visual presence and the performance to match, better handling, stopping power and more creature comforts, the 944 was a natural step forward.

A 'turbo' version of the 944 was always on the cards, an...