If your heads will flow more air and fuel then what the carb would allow then yes it will make more power on the injection unit. How much remains to be seen. The spud they are talking about, you can do it 2 ways with or with out cam drive, I've seen both. One way makes more power then the other because of belts and pulleys which will pull some power out to run them. Dollar wise you can watch this page and Hoseheads and probably pick up most of it cheap since their is alot of unsold parts, just post and ask, and don't jump fast; become a major jew. If you want to go racing.