[Speedjunky01]

it doesnt need to sit on the RAIL! you can get one from b&m very cheap that mounts on the fuel filter and works just as well. look in my pic

http://s5.photobucket.com/albums/y155/speedjunky01/?action=view&current=enginebay001.jpg you can see that black thing on the fuel filter. it comes with a special banjo bolt that alows for a gauge.