Difference between 98+ TA headlights and 97- TA headlights

How much of a difference is there between the 98 and up headlights and the 97 and down headlights?

I'm doing a 98+ WS6 front end conversion and was wondering if I could just buy the headlight covers, or if I need whole new headlight assemblies as well?

whole headlight assembly..

Entire different assembly. The LT1 cars use a single high/low bulb, where the LS1 cars use 2 seperate bulbs.

is this a serious question? :confused: