Hot Fuel Lines

Was wondering if anyone else has ever ran into this issue. Im working on my 66 Dart with a 408. With the build I did I replaced the factory fuel lines with 1/2" aluminum lines and added a return line back to tank. My system goes from tank and runs up the inside of the frame connectors. Then it goes up into the engine compartment past the oil filter area on the inner fender. Runs up the inner fender to the front where it goes into a regulator. From the regulator it goes to the Carb while a second line runs from the regulator back to the tank right beside the delivery line.
My exhaust creates to much heat for these lines that it starts to vapor lock the fuel from feeding up the line. It doesnt start until after I go about 10 miles and then if the car sits it wont start back up until it cools off. Ive hit the fuel lines with my infra red and they get as high as 140+.
So I ordered some heat reflectant wrap that is good to 1100* and Im going to wrap the fuel lines. My exhaust is closest at the muffler where the clearance is about 4" away. The extensions pipes are probably 12" or so away.
Ive added 2 pics of the underside so you can see the fuel lines. Let me know if you think covering the fuel lines will help this or do I have to try something else.
Rod
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