The 348, badged 348 tb for the coupé (Trasversale Berlinetta) and 348 ts for the targa (Trasversale Spider), featured a naturally aspirated 3.4-litre version of the quad-cam, four-valve-per-cylinder V8 engine. As with its predecessors, the model number was derived from this configuration, with the first two digits being the displacement of the engine and the third being the number of cylinders. The engine, which had a power output of 300 PS (221 kW; 296 hp), was mounted longitudinally and coupled to a transverse manual gearbox, like the Mondial t with which the 348 shared many components. The "t" in the model tb and ts designations refers to the transverse position of the gearbox. Overall, 2, 894 examples of the 348 tb and 4, 228 of the 348 ts were produced. Ferrari 348 ts (pre-facelift model). The 348's styling differed from previous models with straked side air intakes and rectangular taillights resembling the Testarossa, stylistic themes reminiscent of the F40, the world's fastest production car at the time, and other prestigious Ferrari models of the past.[6] The model was also the final design overseen by chief stylist Leonardo Fioravanti, known for such designs as the F40, Daytona, 512 Berlinetta Boxer, 288 GTO P5, P6 and others. The F355 that succeeded the 348 returned to the styling cues of the 328 with round tail lights and rounded side air scoops. The 348 was fitted with dual-computer engine management using twin Bosch Motronic ECUs, double-redundant anti-lock brakes, and self-diagnosing air conditioning and heating systems. Late versions (1993 and beyond) have Japanese starter motors and Nippondenso power generators to improve reliability, as well as the battery located within the front left fender for better weight distribution. All 348s have OBD-I engine management systems, though European and general market variants do not come with the self-test push button installed, which is needed to activate this troubleshooting feature.