Did rough measurements and sent it to this company (http://www.fueltankparts.com/universal-tanks/aluminum-tanks.html) and this what they replied back with.
"A 43"L x 9.5"W x 8.5"T, would hold roughly 13.5 useable gallons. I would just need a simple sketch with your dimensions and fitting locations for fabrication. Based off of the dimensions and description, your tank will cost approximately $350.00-$600.00"
Going out of town for a week, but when I get back I may look into these guys a little more closely.
"A 43"L x 9.5"W x 8.5"T, would hold roughly 13.5 useable gallons. I would just need a simple sketch with your dimensions and fitting locations for fabrication. Based off of the dimensions and description, your tank will cost approximately $350.00-$600.00"
Going out of town for a week, but when I get back I may look into these guys a little more closely.