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my first gmc · 09-20-2009, 12:33 AM

I have these:

They're way smaller than stock, and are made for almost any truck you can think of. Never tested for any mpg increases though.

09-20-2009, 12:33 AM	#17 (permalink)
my first gmc EcoModding Apprentice Join Date: Feb 2009 Location: Houma, LA Posts: 121 Sierra - '96 GMC Sierra 90 day: 20.89 mpg (US) White Lightning - '10 Mitsubishi Lancer GTS 90 day: 27.18 mpg (US) Thanks: 0 Thanked 0 Times in 0 Posts	I have these: They're way smaller than stock, and are made for almost any truck you can think of. Never tested for any mpg increases though. __________________