Put in a cam for torque, and don't tell him. With decent mufflers the idle will sound fine. Choppy idle is for race cars, not street cars, or wannbees with street cars. The types of guys that wander around every cruise night saying they have a 500hp engine 'cause it's painted orange. Building for that is simply a mistake. If you want to help - get him the cam that will work and sound like whatever it sounds like.