[Artfrombama]

Just completed the stainless tunnel fuel line install last night. Definitely a challenge for one person, two would have made it much easier.
One tip I would make for the install, work the lines from the rear starting with the larger supply line. As you work the line forward push the line as far to the right side of the tunnel as possible. When the line bottomed on the frunk bulkhead I was able to grab it and pull it through with long needle nose pliers.
The smaller return line routes inboard of the supply line the same way.
Easy to get the lines fouled with wiring, shifter, brake lines etc. advisable for someone in the cabin pushing the lines as far to the passenger side as possible.
Not a particularly difficult job, took a couple hours