starting with the 6 0 litre to the current 7 3 litre developed from the engine used in the SL65 AMG I m not 100 sure about this But I am pretty sure the engine is not from the SL65 which uses twin turbos I believe the engine is the same as in a 2002 S600 The older non turbo V12s I believe they bored it out and kept in normally aspirated on all Pagani Models