Porsche released the 964 Turbo 3.6 in January, 1993, now featuring a KKK K27 turbocharged version of the 3.6 litre M64 engine developing 360 PS (355 bhp; 265 kW) at 5,500 rpm and 520 N⋅m (384 lbf⋅ft) at 4,200 rpm of torque, produced only for model year 1993/1994, with fewer than 1,500 of them produced in total, making it one of the rarest and most sought after Porsches produced since the 959. A black 1994 MY was used in the Bad Boys movie, starring Will Smith.

At the end of 964 production in 1994, the Porsche factory had some 90 Turbo chassis left. These were all transferred to Porsche Exclusiv and built as the very special Turbo 3.6 S, available either with the traditional 964 Turbo 3.6 body or with the exclusive flachbau ‘slant nose’ option.

Option X83 (Japan), X84 (non-US) and X85 (US), the Turbo S Flachbau, was available in the US as a US$60,179 option on top of the base price US$99,000 Turbo 3.6. The flachbau option was available when ordering the no charge ’36S’ option ‘1994 Turbo “S” Model’ at a price of $60,179. In addition to the slantnose fenders, it also included the ‘X88’ option which included the ‘Turbo S’ motor, the ‘X92’ Exclusive front spoiler, ‘X93’ Exclusive rear spoiler and ‘X99’ Exclusive rear fender air intakes based on the Porsche 959. The flachbau option was designed around the model 968 front end, and the 930 style Turbo S front end for Japan (right down to the sill covers on the fenders). 39 Models were made for US markets, 27 for international market and 10 for Japan, all in Polar Silver (http://flachbau.com). An additional 17 X85 models were commissioned by Porsche Exclusiv for the US, known as the “Package cars,” replacing the slantnose front end with the original 964-style front end.