GE Dash 7 fuel tank sizes

[nsc39d8]

I am working on a GE  B30-7 loco project and my prototype has a 3350 gallon fuel tank.  Does anyone know what the length of this size tank should be?  Might anyone know what the gallons are for a stock Atlas B23-7 tank?  I know there was a thread on here about EMD tank sizes and I kept that info for reference, thanks to those that made that list.

Thanks in Advance,
James Wall