Time to test, not guess. What is the fuel pressure at idle? Have you checked and replaced all the rubber hoses in the system? Did you blow out all the lines when you replaced the hoses? What condition is the tank sock? If you have a clear plastic fuel filter can you see fuel in the filter at...
Hot Rod Powertour 2022. The maroon one is a LeBaron with T-Tops. He changed it to a Diplomat grill and lights. Saw him parked and had to park next to it. My Diplomat got more attention than my previous Formula Firebird.
The rubber feet on those don't go through the roof skin. They are just feet. The hook on the end that wraps into the door opening are what holds the lightbar on. Usually the only hole with a lightbar is where the wires go through the roof.
Do you already have a light bar and just need mounts? Or do you you need a light bar? If you need a bar check municipal surplus sales. Whatever manufacturer you find call their parts/support line and tell them you need a mount kit.
Most modern (late 70's to now) light bars have "feet" that rest on the roof at the reinforcement. They have a hook shape bracket that goes into the door frame and pulls tension with a bolt.
Not a swap, but I just went thru this trying to find a replacement line. Found that the line for a 1978 Diplomat there are 2 different lines. The 4bbl line and the 2bbl lines are different. The 4bbl line goes to the right toward the fenderwell.