As it was explained to me, you don't necessarily need to see fuel pressure from the cockpit. The only time you may need to see it is when setting a baseline from the engine bay and for that you only need an Aftermarket Fuel Pressure Regulator that has an extra port for a bolt on gauge like the B&M gauge. Your fuel pressure regulator "should" do the rest from there and if it doesn't you'll see it on the logger.
Here's my thread I started in the Tampa Bay forum.
http://tampabay.dsm.org/phpBB/viewtopic.php?t=12231