it'll be a lot harder than its worth. You would need to change the housing for the globe(low beam) so that it could house a h4. And then you might have an issue of the plastic going that yellow colour cause of the extra heat.
Another alternative is to fit the fairmont front on the vehicle...
If you want brighter lights, then get some of the osram(narva) 50+. They are about as good as you can get them without any troubles.