I'm just wondering if the '98 headlights can be installed on my '96?

 

Yes, they both have the same two piece headlights. They were changed to one piece on the 99+ models. I'm assuming those are what your talking about. In order for them to fit you can you'll have to do a bit of fender shaving, its not hard. Check the DIY section or audiworld.com tech section for more info.

 

I'm actually having trouble finding anything about this mod.
So, do you have to shave a part of the fender that is seen when the headlights are in their normal position, or is it just sort of behind the headlights where they meet fender?
Are there any wiring modification that need doing?

 

Nobody knows?