Will these fit?
 

Hello, I'm looking into changing my rims and tires out pretty soon. I'm currently running the stock rims with 285/75/16 mud tires. I'm looking at a set of Moto Metal MO970 17x8 +0 rims with a 285/70/17 all terrain tire. my question is if I can run these with no trimming and without cranking the torsion bars? My truck is a 2003 GMC Sierra 1500 z71 4x4. That I know of, it's a stock suspension, but it looks pretty level. I found the stock backspacing of my truck and it's around 4.97" backspacing. These rims have about 4.5", Will this information help?