I purchased a fuel line for my 63 621 USAF Tug, just in hand looking at it I have no clue how this thing is going to fit. If you lay it on a floor it's completely flat. The sending unit and carb are on two completely different angle to each other. It came from Steiner, there are no instructions other than the muffler needs to be removed. Can anyone offer a little insite, please. I am going to call them in the morning.