I am getting ready to start the project and I was just wondering what size the fittings on the front of the heads are. I am going to use the exhisting fittings on the back but going to replace the front ones. Also when I tap into the feed line back by the tank selector, which line is it. Thanks.

 

If i remember right on the top of the selector valve the one closet to the frame.

 

I left the front fittings and replaced the back ones. I'm not sure on the sizes though. I do know that the front ones you can just use a 4 AN line as the fittings will work.

 

so I got under the truck today when I got home and it looks like I have 2 fuel lines coming off of the selector valve. They are running parallel to eachother one on top and one on bottom. They are wrapped with a piece of tape from the factory that says fuel on it.