So my grandpa's got a set of wheels that he's offered to give me, the only problem is, is I don't know if they'd fit. The information I was give was: the tires are 255 50 16, tires are 11 inches wide. The wheels have 6 inch bs and are 8 Inches wide. I asked about offset, and got backspacing. This is all the information I have, my question is, will they fit an 85 Monte SS with stock suspension? And if not, what do I need to do to get them to fit?