Which power adder:

[ScottyB]

turbo....efficient, relatively small in size with the exception of an intercooler, sizes can be juggled to fit engine type to a T, and no parasitic loss. they take the cake.

i dont know a whole lot about nitrous other than if you don't install the correct type of kit (dry, wet, etc.) you can fry stuff pretty easily. plus filling up a bottle sucks. you can be stealthy with the install though.

superchargers are nice i guess....but i see no advantage to them over turbos other than ease of fitting in a V style engine, low maintainance in the self-lubed units, and no lag. plus they are slightly less expensive than turbos.