Readers will know that I am using a Weber carb kit to replace the original Nissan one. Besides being a mess, it had more plumbing coming out of it than the Pompidou Centre. The new one will be better, but one thing I never liked about it was the air filter – it was too boxy (see above). So I bought a little “helmet” style one with louvers on the sides, which looks the part. It'll fit in the dome of the engine cowl nicely. Yes, nobody will ever see it, but I have come this far and it’s a small additional effort to make to get things just perfect. The problem is that I now have to fit a round peg into a square hole. Might have to get an adaptor of some kind made.