Vacuum line diagrams

Successfully replaced spark plugs and PCV valve but in the process broke a hard plastic line. It comes from a box right next to the maxi-fuse box. This box is on the driver's side. From this box, a flexible rubber vacuum line connects to the fuel rail directly above a fuel feed line. This is on the opposite side of the intake from the FPR. The hard plastic line that I broke crosses the fuse box, joins with the fuse wires through the firewall and into the passenger compartment. Line continues under the carpet along the passenger side of the vehicle, but I don't know for how far since I didn't pull up all the carpet. After running around the block to be sure the car would run, I smelled gas in the oil when I pulled the cap off. What is the name of this box/cover next to the fuse box, how can I replace this line, and is this the cause of the fuel in the oil? In this picture, the elbow with the yellow dot is connected to the vacuum hose that connects to the fuel rail. You can't see the flange where my broken line is attached because I broke that too.