Mechanical Fuel Pumps

Not wanting to reopen an old thread but it's better than starting a new one. Does anyone know of a good mechanical fuel pump for the slants? I want to boost reference a mechanical pump and was hoping to find a little better than stock pump to do it on. (I do not want to run an electric pump and I know boost reference mechanical pumps are reliable up to about 10psi and I am only going to be running 6psi)