Hey all, I am wanting to increase the hp in my 1964 300ci for my skylark. I want to stay with the original engine. I have a question about the cam specs. Does anyone know the stock cam size and any ideas as to if I can make it have a more throaty sound using a larger cam. The rocker arms on a rail is new to me but have been told you need to be careful since you can not adjust them. Any help will be appriciated! Thanks.