I just purchased a 2001 Suburban K1500 with aftermarket 20" rims. The rims are nice, but not really my style. I just want low key wheels. Someone in my area is offering a set of stock wheels off of their 2007 Suburban. Will these fit on my 2001? The 2007 set is 6 lug just like my current wheels but I don't know anything about the spacing or anything like that. You'll have to excuse my ignorance when it comes to this kind of stuff, but I've not spent much time modifying any vehicles. Are there any problems I should be aware of in replacing my wheels? Not that this will really affect my decision-making, but do stock wheels with stock-sized tires tend to get better gas mileage than the larger wheels/tires? Just curious. Thanks in advance!!