Doesn anyone know what
is currently the fastest road going Ferrari and Racing course Ferrari?
Well, your question is pretty vague, especially the second part. Do you mean top speed or acceleration? When you say "Racing course Ferrari", do mean a Scuderia Ferrari Factory Racing F-1, a homoligation special, a contract car(i.e. the FXX), a semi-factory race car like the 550 LM-GT1, or production cars designed for Ferrari's Challenge Racing Series of which includes the new Scuderia 430.
As for road legal, regular production cars, the Enzo is king of top speed at 217+ mph. As for road course cars go, that question is to vague to really answer. What I can say is that of the semi-production cars (which means that at least two were made from the same basic blueprints) like the FXX and the F50-GT, the FXX accelerates the quickest with its lower ratio gear box, while the F50-GT could hit a mind numbing 235mph on OEM equipment. Truly amazing cars.
As a side note, both the regular Enzo and the FXX came in a mirrored Maserati version, both of which were de-tuned slighlty compared to their Ferrari counterparts, in the sake of Ferrari's pride.