bolt pattern ?

Typically the same lug pattern as the Chevys.

6x5.5" or 6x139.6mm

You will need to pay attention to wheel offset and backspacing to assure proper clearance with suspension components.

Blackbeauty said:

You will need to pay attention to wheel offset and backspacing to assure proper clearance with suspension components.

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It's usually not the suspension components that interfere as often as it is the area of the front fender/body directly behind the front wheels. Certain wheel/tire combos will require that you perform the "Pinch Weld Mod". If you do a search on that you'll find plenty of info.

It is certainly possible though to have interference issues with the spindles/sway bar though with the incorrect combination.