Dave - do you mind me asking which LED conversion you went with? The metal post with screw that the retaining spring for the driver's side halogen bulb broke when replacing the bulbs (it's old, I guess). So, the way I see it, I have to find a new H4 housing unit, replace the whole thing, or bite the bullet and convert to LED at this time.
I've been looking around, and this conversion looks pretty good:
https://www.headlightexperts.com/catalog/product/view/id/503/s/h6024-dual-beam-sealed-beam-led-headlight-conversion-kit/category/2/
Peder