I'm in the process of upgrading my headlights on my 240 project car and I found a website that was very helpful. It's
www.danielstern.com. I bought an installation kit for my headlights from them but I bought a set of headlight housings and bulbs from some company on ebay (because they were much more affordable). that site is very informative. I haven't got mine installed yet so I can't give you any testimonials yet. Good Luck!