I installed 4 of these in my 1991 G20 van. Simple install, no mods needed. Pricey, but very nice. If you drive in the winter time you may need to clean off the ice as they do not get hot enough to melt the ice build up.

[Linked Image from i.imgur.com]

Trux TLED-H7 high beam
Trux TLED-H6 low beam