Only the performance engines got the vapor separator at the fuel pump, but if you want reliabilty out of your fuel system then I highly recomend a return line coming from the fuel pump.It can be used with the stock pump or a electric pump. I believe the stock vapor separator is setup different than a fuel filter with a third nipple on it.
The proper way to vent the fuel tank is to run the vent line up to the breather on the valve cover.The vent lines from the gas tank hookup to the rear vapor separator just like they are layed out.


Here's a picture before the vent line was in place or the rock shield.