[HealeyRick]

Lucas had two series of driving lights, the 500 and 700 series, being 5" and 7" in diameter respectively. Only the 7" ones properly are called "Flamethrowers" Standard sports car practice was to fit one fog light, the SFT prefix, and one pencil beam driving light, the SLR for long range" light, but some fit two of the same type depending on their driving needs. I can't tell from a quick look whether the FIA cars were using 5" or 7" inch. If you can find a really good picture, post it and I can probably tell. Depending on how big a stickler for accuracy you are, you'd want to get originals with "LUCAS" on the top tab. Be careful, though, repros and fakes abound of lesser quality. Moss Motors used to sell some with MOSS on the tab.