I can't really recommend styles because it is completely subjective.
As for size, assuming you have an E-Body...
Front: 8-8.5" is a good width with back-spacing in the 4-4.5" range
- Tires: somewhere near 245/45-17 will be close to the stock height.
Rear: 9-10" with bs around 5" should do.
- Tires: 285/35/18 would be nice and wide. You may be able to go wider, but measure first.
That'll get you started...
