315/70/17 BFG AT's

Looking at getting a set of H2's with the OEM tires, but unsure after searching if they'll fit a stock with cranked t-bars and trimming?

What is the stock BS. vs the H2's? Do the H2's come close to the A-arms on the stock setup and that is where the rubbing is taking place?

I know every truck is different and I don't mind trimming. Also, do the Chevy centers just have to have the knobs knocked off to fit on the H2's? Any other fabrication needed?

Thanks,
Adam