This was from the vintage mustang forum and figured some people here might be interested in them. Toyota has their H4 7" glass headlights on clearance and it comes with a wiring harness and relays. I bought my set for under $15 from my local toyota dealer for my 66 mustang. Average price has been around $15-25. Don't order from the first link below but use the part number (8111060P70) or use the second link.
https://parts.toyotasouth.com/oem-parts/toyota-headlamp-assembly-8111060p70
https://autoparts.toyota.com/products/product/headlamp-assy-8111060p70
Here is a link to the post from the mustang forum with pictures.
https://www.vintage-mustang.com/posts/10986635/
https://parts.toyotasouth.com/oem-parts/toyota-headlamp-assembly-8111060p70
https://autoparts.toyota.com/products/product/headlamp-assy-8111060p70
Here is a link to the post from the mustang forum with pictures.
https://www.vintage-mustang.com/posts/10986635/