spacers

Has anyone used a wheel adapter in order to use wheels with more off set? I have a set of 16" 1997 Z28 wheels that I'd like to use on my 2nd gen camaro. To do this I need a set of 2" wheel adapters (4.75 x 4.75). Does the off set spacers cause too much pressure on the bearings & suspension...

I am looking for these spacers which hold the center A/c vent ends (part that rotates) in place. I have a repro of the vent but it did not come with the spacers :confused:. I am not sure why. I have seen a couple of places on line that supposedly sell the vent part with the spacers so I am sure...