Re: Hey Board
welcome! I love my 91 R2500 as well, it does have the factory 40 gal tank with receiver hitch. Parts for these trucks should be pretty easy to come by but some are not cheap...
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91 Chevy Suburban Tonawanda 454 R2500 - SOLD!!! 
04 Dodge Durango 5.7L Hemi 2WD, 24K miles (as of July 2011)
In the past 30 years about 90% of Fords are still on the road, the other 10% made it home.
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