First, click through the following slideshow to figure out where to place your Fuel Return Line:
Now lets build your Fuel Return Line. Slide one of your new worm gear clamps onto the end of the Fuel Hose (The fuel hose end that is closest to the Firewall. Not the end that is to be connected to your Header Tank). Then push your new 90 degree fitting onto the same end of that hose.
Now tighten the worm gear clamp around the 90 degree fitting as shown:
Layout and drill a 14.5mm hole in firewall.
Now tighten your 90 degree fitting onto the Firewall location:
At this point, run your lines through the route as described in Step 1. Attach the included One-Way check valve Return to the end of your Return Line. Note: You will have to cut about 1 and a half inches off of that line to go above the One-Way check valve (shown in Completed pictures at end of instructions).
Put together the parts on the forward side of the firewall as shown: