The throttle body from the factory is the same body used on the m112 and m112k; same part number, same body. Those looking to open it up generally use the m113 throttle body as it bolts right on, but has larger throat/opening.
The super charger from the factory is piped into the cars cooling system: so the capacity is the cars per specs for cooling.(engine, radiator, reservoir tank) If you separate the super charger cooling as an independent isolated system including the small radiator, pump and hoses you at looking at under 1/2 gallon in the whole system. Some people have added after market larger radiator for the super charger and also a small tank so their capacity is a bit larger. If you are just talking the intercooler itself it isn't even a pint, probably closer to 8 oz.
Non of that info is actual by measurement, just from my experience isolating the cooling on my SRT6.
There is a gent in Germany who actually has two cooling radiators for his SRT6; One is in the normal location and the other is under the car near the transmission and he is running a larger pump.