Hi Shawn,
Here are some photos:
Yellow arrow is the fuel supply line from the fuel filter to left side fitting on the fuel pressure regulator (FPR). Orange arrow is the fuel return line from the bottom fitting on the FPR to the existing nylon fuel return line back to the fuel tank.
Important caveat! You will using a 3/8in to 1/4in brass barbed union to connect the fuel injection hose supplied with your x-faktory kit to the existing nylon 1/4in return line. Make the connection of the barbed union to the existing nylon line first - you will need a nylon fuel line press (I bought a Dorman 800-301 Fuel Line Repair Tool on Amazon) and a heat gun. If you have worked with nylon fuel lines then you already know the drill, I had not, so I watched the how-to videos first. Once the connection of the barbed fitting to the nylon line is done, then the connection to the 3/8in fuel injection hose is easy: put a hose clamp over the line, press the barbed fitting into the hose and secure with the hose clamp.
From Page 1, Post #11 of this thread: " Then I plumbed in the fuel lines using 3/8 inch ID Gates Barricade Fuel Injection hose (note: it is important to use fuel injection rated hose that can withstand the higher fuel pressure compared to fuel hose used with carburetors). I used a Dorman 800-301 fuel line repair tool to press a 1/4 inch to 3/8 inch barbed connector onto the factory installed 1/4 inch ID nylon fuel return line (I used a heat gun to soften the nylon line while I pressed on the barbed connector). For all the other connections (fuel filter to fuel presure regulator (FPR), FPR to fuel return, and FRP to injector fuel rails), I pressed on by hand the 3/8 inch barbed AN-6 fittings supplied with conversion kit and secured them with hose clamps."
The white arrows point to the fuel lines that run from the right side fitting on the FPR to the injector fuel rails for each bank of ITB's.
This photo includes the intake manifold vacuum plenum (with RHD marking) sitting to the right of the FPR.
The blue arrow points to the intake manifold vacuum plenum. There is a 9/32in vacuum hose running from the barbed fitting at the base of each ITB to the barbed fitting on the plenum (6 total). The small 1/8in vacuum hose connects to the smaller barbed fitting on the plenum and runs along with the ECU wiring harness back to the Mega-Squirt ECU and connects to the fitting on the ECU which is your connection to the MAP (manifold absolute pressure) sensor.
Hope this is helpful - let me know if you have any questions.