Spar parts to a classic in my country are $$$ xpensiv in stores for many people .
So in those in my mind,
I go to a car spar parts,and look for a 7" size replacements reflector and found one to a Volvo 164(its classics now)
But it don't have parking light bulb so I drill a hole to the light bulb
The best options for the best light , have in your mind is a Bi-Xenon light and a round 6000 kelvin brightness
Hope this explains I little to you
Egil