When I had my Intermeccanica built, Henry and I specified LED light bulbs for front and rear. I have been very happy with these bulbs.
I just had one of the front bulbs burn out. I contacted Jim Franzen, looking for a replacement. I had of course anticipated to pay for a replacement, after using the car for four years, and having the lights on each time I take the car out, for safety.
To his credit - and to my praise of him - Jim is sending me a replacement at no charge. You can't do better than that.
His lights are first quality, with brightness that adds an extra measure of safety to our cars.
I highly recommend him as a source if you are looking for LED bulbs for your speedster. They ain't cheap, but they are worth it.