recommendation(s) for 4" x 6" headlight conversions on 1980s big RWD Fords

I have a couple of 1980s RWD Lincoln Town Cars. I want to install better Hi / Lo beam lighting. Even halogen sealed beams are not quite sufficient.

But I understand that this rectangular size.... is getting scarce. Recommendations?

Re: recommendation(s) for 4" x 6" headlight conversions on 1980s big RWD Fords

The traditional good options (Cibie, Marchal, Carello...) have been dwindling, it's true, but some of them are still available and new options (JW Speaker, Truck-Lite) have been coming onto the market, too, and/or will be soon. There's enough of a variety on the market that you should be able to find something that works well for your needs at a workable price point. With the small rectangular lamp format, it is extra-critical to pick out a good lamp. I would send an email to Dan Stern and get the skinny on today's best picks.