2004 alpine rx1, from my fuel regulater there are 2 fuel supply lines that run to carbs. one line is teed prior to carb, this line splits and one line goes to the carb assembly and the other is a return to tank.the supply line that splits and goes to the fuel tank, could i tee a fuel pressure gauge there?does the return line to tank fitting, does it have a hose inside the tank like the other supply line to fitting, want to change filter and dont want to get them crossed