[Dual fuel tanks ?]

I saw those at Rock Auto.  Not 17 gallons but beggars can’t be choosers.  Thanks.

[Dual fuel tanks ?]

I am a plumber so I don’t see any trouble with that aspect.  There is a spot in front of the existing tank that looks good if I reroute the e brake cable or where the spare tire is.  I have a spare tire holder that goes in the receiver hitch.  Rock Auto has all the dual tank accessories if I can just find a tank to fit.  We do the gas can on the bumper thing but it’s only a few gallons and inconvenient.  

[Dual fuel tanks ?]

Is it possible to add a second fuel tank to a 92 Toyota Itasca ?  I think I have the 17 gallon tank and would like to double that capacity.  I can only find stock replacement tanks for sale and don't think they will fit.