New lighting technology

Well dang, guess I won't be upgrading my headlights anytime soon since I hardly drive my Duster at night any more and I'm not eager to dump $400 on headlights or redo the undersized old factory wiring. I'll keep those in mind though... J.W., Truck-Lites, Peterson, Hella, Koibo.
Might be able to do a little better than that in cost.
The Hella 'Vision plus' (002 395 301) lamps are about $50 each. $100
The H4/HB2 bulbs are included but not considered particularly good, so add another 30 for a pair. (see Dan's post here for specific bulbs)
IIRC Crackedback's relay harness or a Dan Stern's kits are in the 100- 150 range. If you do it all from scratch less, but more time and work.
Total will be $ 250-300.
So that's not a big reduction in cost, but something. Its a shame there is nothing decent in sealed beam market. But we see this in lots of the replacement parts - not just lights. :(

Maybe if you are motivated, just do a relay harness. That will help make the most of whatever lamp you have up front, and keep that load off the main feeds.

Be careful about the 'vision plus' 7" lamps. I just looked at Summit and saw they listed several under that name that do not have the aiming tits, and going to Hella's website confirms they are a different lamp.