I found that several lines were cracked and leaking.  The 2" filler was by far the hardest to find and took 3 tries so hopefully this helps someone save the work.  The issues with the first 2 was that they were too stiff to bend and fit between the frame rails and connect without removing the tanks.  The line that worked best was Continental 59212 that I got from Summit Racing .

I also found that the line between the tanks, tanks to cyclone tank, and cyclone tank to fuel pump were bad.  Most of the line is 5/8 standard line. I noticed that the fuel pump inlet is 5/8 but the cyclone tank is 1/2.  I opted to use a 1/2 to 5/8 barbed fitting to maximize the use of 5/8. This was 2 fold. First was to improve the connection on the pump but more importantly I have been worried that my stalling issues could be either the 1/2 line collapsing under vacuum or vapor lock due to the distance from the exhaust pipe.

To avoid vapor lock I made sure the line was high temperature rated thick wall. I also purchased some insulation sheets and wrapped the exhaust pipe near the fuel lines. I hope that the lines back to the engine are all good because I'm not sure how you replace those that run inside the body panels

21 Sept 2025 Update

Still having trouble with fuel leaking at the 5/8 inch lines. Host clamps are as tight as they can go. It's seeping out around the line primarily at the fuel pump input. I replaced the hose clamp with a better one which didn't fix it.  I just removed it, scuffed up the fitting and added some fuel safe liquid gasket material then put the hose on hoping that it would seal the tiny leak.  It looked good but I just got back from a car show and I think it's seeping again.  I'm wondering if I should get some different fuel line.  https://www.amazon.com/dp/B0CDWF6MKC is what i used which looks to be fine but I guess maybe I shouldn't get stuff like this from amazon. The 1/2 inch line I got from an auto parts store isn't leaking at all.

I replaced with some 5/8 from Napa and also added some fuel safe gasket filler and that seems to have stopped the leak for now. I will also mention I tried to skip the hoses from the cyclone to the tank because they looked hard to get but both leaked so I ended up having to replace them too.