Thanks to 8mpg for all the help. He had an awesome write-up that allowed me to approach this project with some confidence. I took some pictures, so I don't have to type as much.

The Walbro pump and 26psi relief valve are mounted on the outer side of the left (drivers) frame rail. There is a 20A in-line fuse right next to the pump. I'm probably going to move that to under the hood (next to the relay).

The fill neck return photo is pretty self-explanitory. The other line you see in the background is the gravity feed from the in-bed aux tank into the fill neck breather line (that's the 3/4" line).

The "Checkvalve Manifold" is what makes this set-up so cool, IMHO. It's mounted on the inside of the left frame rail. Those check valves look just like short nipples from the outside. They crack at 1 psi and don't let any fuel flow in the "wrong" direction. I actually cut the stock supply (steel) line and mounted this manifold in.

The gauge is mechanical, and is fed from the tapped banjo bolt on the CP3. The switch is run thru a relay under the hood. The on-on toggle switch, combined with the checkvalve manifold, allows me to flip back and forth between the stock LP and Walbro with "just the flip of the switch."

The damage to the pocket book looks to be around $360, and that includes the gauge, and the ability to switch pumps at will.

Let me know if you have any questions.
Steve

 

Lets try pics instead of pdf's (1 of 2)

 

pics (2 of 2)

 

good deal man... Glad you got her all fixed up. I like your idea of the two check valves...if I could redo mine, I would do it that way to. I just didnt want to wait another week on ordering another check valve.

 

Is this a cheaper route than the GDP kit?

 

Looks really sweet! I am bookmarking this. I still don't know if I can do this by myself, without the help of a kit, but I eventually want a FASS or Walbro on my junk.
Scott

 

The GDP kit runs just under $500. That does not include the gauge or the ability to switch between pumps with the toggle switch.
My set-up was under $360.

 

Its easy to put in..it helps to have a friend to drop the tank but other than that, its something you can do by yourself... Here is a full write up on my setup. The only thing I would change is to follow Svanni's method with the 2 check valves.

https://www.dieseltruckresource.com/...ghlight=walbro

 

where do you get the releif valve i just bought my walbro 392

 

I got the relief valve here:
http://goodvibesracing.com/check_val...components.htm
I got the AN6 CHECK VALVE 25psi, and it runs 26-28 psi.

And I second 8mpg's comment on needing a 2nd person to drop the tank.

 

And I got the 2 check valves here:

http://www1.mscdirect.com/CGI/NNSRIT?PMAKA=04108601

The rest of the 3/8" brass fittings came from either Home Depot or Lowe's.

 

Oh yeah, this too. If you go with the AN6 CHECK VALVE 25psi, you will also need the AN/JIC to hose barb fittings (2). You may be able to find those locally or try Glacier Diesel.

 

Cool, great job! Where did you get the gauge and is that gauge noisy? Does it flutter at all?

 

The gauge doesn't flutter or make noise. None at all. It's an Autometer # 2173 (http://autometer.com/cat_gaugedetail...earch&gid=2813) from ebay for under $40.

 

Nice write up! This should make doing mine easier...but I think I'll wait until fall when my garage is less than 120F