you can get a gas tank off of eBay or junkyard or some auto website.
my 1976 dodge d100 has a 30 gallon tank.
It is either a 22 or 30 gallon tank.
The manual for mine says 22 gallons or optional 30 gallons.
A 1998 Dodge Intrepid has a 17 gallon gas tank capacity.
The gas tank on the 2010 Dodge Challenger holds 18.0 gal..
The gas tank on the 2011 Dodge Durango holds 24.6 gal..
The gas tank on the 2006 Dodge Durango holds 27 gal..
The gas tank on the 2012 Dodge Durango holds 24.6 gal..
The gas tank on the 2007 Dodge Durango holds 27 gal..
The gas tank on the 2014 Dodge Challenger holds 19.1 gal..
The gas tank on the 2008 Dodge Avenger holds 16.9 gal..
The gas tank on the 2013 Dodge Challenger holds 19.1 gal..