What is the model number for the JR servo?

Already got the alum. upper and lower a arms, hubs, and knuckles, and 3 air filters, spare new tranny, and the MX3 radio.....So off to go start of parts and ups....

Almost bought the supercharger for it....but it looks like its more for show than any go.....more of a ram air effect than anything...I dont see how it would ever make any "boost"