[cal30_sniper]

Yes, they are a direct replacement for the stock 16" steelies. Even the hub center bore is the same, so you keep a hubcentric fit. If you want to use the factory centercaps, you'll need to get SAE thread lug nuts with external threads. The factory external thread lugnuts are metric and wont fit the studs on a squarebody. I got my SAE external thread lugnuts off eBay, and the centercaps thread on them very nicely. Beware, there are two different types of centercaps out there for those wheels. Anything from an aluminum rim will fit correctly. Steel rim centercaps will not fit unless you trim a good bit off the outside perimeter.

I've been running the wider 17" Hummer H2 rims on my Suburban for years. One of the most cost effective upgrades I've made to it.