I need to replace the tensioner and belt on my F350. What after market tensioner and belt is everyone using. I have always liked goodyear gatorbacks, are they good for these truck? Also where should I go buy a new tensioner, the dealer want $140 for one, but O'reilly's has one for $87. I have other options available, Autozone, NAPA, Advance, PepBoys... What are you guys running? Thanks!