gingles

What intakes are people running? Ive heard mixed reviews of the carbino. Are people just replacing stock air filter and calling it good? Also I am not really interested in replacing the entire exhaust system unless good numbers are coming out of it. What are the avg HP gains from some of the exhaust systems out there? Are people changing out crank pulleys or anything to reduce parasitic drag? Any intake manifolds out there for us V8 guys? Lastly is anyone doing anyhting ignition related to our cars? I know its a coil system instead of a wire but are there better coils out there for us?