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Old 01-20-2014, 06:51 PM   #11
SS Tim
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Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,507
Re: Factory underbed fuel tank?

Gary, Your truck probably had a pair of in-bed tanks. Most of the aftermarket saddle tanks used side doors (including the GM accessory saddle tanks) or wheel well fillers. The really high through bed fillers are usually only seen with in-bed tanks. But the GM NL2 and earlier N18 aux tanks did use a similar left side only with a vent pipe style filler.
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