best for cost effective is the above mentioned qjet. "750" qjets have flow tested near and above 800cfm with the spread bore you get awesome throttle response for the street and good milage (as long as you keep your foot out of it )as far as intake edelbrock victor jr. air gap is almost fool proof to make power with

edit: qjet can also be reworked to flow over 1000 cfm so it can grow with you