Vanagon gas tank swap

large fuel intake 2 5/8 opening diameter,,,one of the Vanagons the 1981 was parked in the 90s w a full tank o gas,,, 24 yrs later  it was a varnish molasses tar aquarium... looked like roofing tar,, i found a great knockoff on Ebay , that was virtually identical to the stock one, swapped all lines, fuel sender n all rubber grommets  n its back in service, dont even bother swapping fuel tanks w/out replacing sender, grommets n vent n gas lines,,, ez install w a floor jack n wood blocks