How about head light sockets made so the filaments in the new bulbs go the right way.
Dang it! Now you got me wanting to look at something else and I ain't even gotten the other one done!
I've done a headlight upgrade or two in the past for hot rods, including halogens in my personal 31 Plymouth hiboy with 30 Bowtie headlights. Mark, honestly, the two T's I've owned never gave a headlight problem so I've never been in one. Maybe someone else wants to tackle that project? I've got a speedster body to finish, dies to make TT closed-cab window garnish moldings and cowl vent handles, in addition to the steering gear cover thing.
We'll keep ya hopping