Really random question to ask... Is it possible to put xeon headlights or something similar on a 1980 308 gtsi? I need it really bad... can't see anything...
I believe you will need to make major modifications to the electrical system to fit Xenon headlights. You might be able to fit higher intensity regular bulbs. There have been a few other posts on this. Suggest you run a search.
Xenon on a 308 will not be possible. You need a projector beam and the pop-up on the 308 will not have enough room to fit this. Plus as Boxer said you'll have to make some major changes to the electrical system. I would look into getting a better Halogen bulb and mirror, this should fix the problem.