whats the best way to match port your intake to your heads?i figured make my custom gasket for my heads then use that as a template to the intake and get machining dye and then grind it tell there is no more machining dye left on the intake runner side.i dont have a bare block to use to mock the stuff up.does any of u know a better way?

or is my best bet to do it the way i just said to do?