For Heaven's sake, don't upgrade to the crappy USDOT big single headlight! It may look more modern but the light pattern is TERRIBLE and you can't install "over wattage" bulbs to try and compensate for the bad "pattern" without melting the plastic housing. You can get the 1989 or earlier Euro headlamp (single) or buy yourself a set of Cibie or Hella NON-SEALED beam headlamps which is a lot cheaper!!! You can run overwattage bulbs and have a good (euro-code style beam pattern which is much better (safer) to drive by.n Plus, if you re-wire (and you should!!!) using David Stern's wiring kits you can run up to 130watts of high beam on the HI/Lo lamps (90 watts low) each and 100watts on the Hi, each. That is 460 watts of high beam illumination!!! I had that on my old Datsun 510 and it was awesome!!!! Right now I have a 1991 740 and I HATE the wimpy headlights I am presently stuck with. BrickStylez have euro-headlamps listed at 156 each. I don't know if this is for the early 9quad to single conversion or the later US single to Euro single.... If we are lucky, it might be the Euro 900 single with the built-in driving and fog lamps. I like those.