80 over the 5.8L V12. It is mated to a 5-speed automatic transmission. The 2001 S 63 AMG V12 had 100 hp more than the 2001 S 55 AMG, and was a few tenths faster. "60", "73", "70", "55" The Mercedes-Benz SL-Class (R129) had several AMG variants during its production run from 1989 to 2001. The SL 60 AMG was the most numerous of these rare cars. Sold from 1993 to 1998, it used a 6.0 litre V8 engine producing at 5500 rpm. AMG claimed a 0– speed of 5.6 seconds. Its top speed was limited to , but with the limiter removed, it was capable of approximately . AMG later unofficially conceded that was more like 5.0 seconds and the engine produced between 405 and 410 bhp. Extremely rare was the SL 73 AMG, sold through Mercedes-AMG in 1995, and offering the most powerful V12 engine ever put into an SL up to that time. After a brief hiatus, the SL 73 was offered again from 1998 to 2001. The same 7.3 L V12 was later used by Pagani in the Zonda. Even rarer is the SL 70 AMG (7.0 L (7055 cc) V12 engine). The SL 55 AMG was sold in the R129 body style from 1998 to 2001 in limited numbers (5.4L V8, at 5500 rpm). It was the predecessor of the production R230 SL 55 AMG sold later, albeit was normally aspirated in the R129 and not supercharged as in its R230 successor. "63" M156 6.2 L V8 The "63" M156 is currently in production in the C 63 AMG and tuned as the M159 in the SLS AMG, although there were many models that were previously in production. This naturally aspirated V8 will also be used to replace most of the "55" models. The published output according to Mercedes varies from on the C 63 AMG, to on the C/CLK/R/ML/GL/S/SL/CL/E 63 AMG. The 2008 S 63/CL 63/SL 63s that used the M156 engine at 518 horsepower edged out that of the S600/CL600/SL600, the latter powered by the 510 horsepower 5.5-liter twin-turbo V12, while also having a higher redline. However, the S600/CL600/SL600 is more expensive and has more torque at . The S 63/CL 63/SL 63, however, do have quicker acceleration times than their S600/CL600/SL600 counterparts and are the fastest in the lineup in 2014, due to the added weight and torque of the 65s, thus