Don't go solid for a street engine and you know with that much cam you will have to compensate for it in other areas, unless it is a Sat. nighter only and your demeaner is rough as a cob. Don't think the 180cc runner will help the 'problem' of this cam in a street car. Thats enough cam to match most heads available,' DEPENDING' on what else is there and if it matches the application. If the rest of the vehicle/engine is a matching application, AND, vehicle use,intended RPM range,is factored in with all that then yes the 180 or 200cc heads would work.