Dropping 1979 fuel tank
 

I know I need to unscrew the filler spout at the fuel door, and the fuel sender unit (why is it not called the fuel level sender unit) is accessible by removing the rear driver tire. How do I disconnect the three rubber lines before removing the straps holding the tank?
I have siphoned it, and it no long drips fuel.

u will have to lower the tank to got to the supply and return lines at the top of the tank(spring clamps), the phillips screws for the sending unit, and i just remove the filler hose connected at the tank(hose clamp, phillips screw there as well). open the filler door, there's 3 10mm bolts that hold the filler neck. removing these will allow the tank do drop low enough to get to everything.

Awesome, thank you. I feel more confident about doing it this weekend.
That part about having to lower it a bit was the piece of info I wasn't finding.