Replaced gas tank, won't start!

I'm actually ashamed to admit this, but I will. You know the little shipping plugs they put on the ends of tubes. Need I say anymore? But I did learn one other thing, the old sending units pipe sits about 2-2/2" lower than the replacement. Since the sender on the original one worked its the one back on the car.
Anyway the plug sucked up the rubber connecting hose so it couldn't be seen. Pulled off the connecting hose and shook my head!

thanks everyone and have a good laugh.....
That's a common story with aftermarket sending units. Good decision to put the original back in -- unless you have a need for an aftermarket sending unit such as larger fuel lines or fuel return built into the sending unit, its best to stick with OEM. Several places can rebuild them if needed also.

Glad you found it.