Our airbox threads often sound like it's a simple "yes or no" decision between them and pods/uni's; but years ago, XSJohn worked out some mod's that are possible on at least the later airboxes that offer another alternative. I'm sure the details are still available on this site, but IIRC they involve adding a third inlet tube and removing internal ribbing that forces several changes in airflow direction inside the boxes upstream of the filter media. I did these mod's on the airboxes on my '82 when I still had BS34's on it, plus trimmed back the rear flange on EACH side cover to unshroud the inlets to each airbox. The carbs already had XSJohn's needles and the larger jets he recommended in them, so no way to tell exactly what difference these airbox mod's made vs bone stock, but it seems logical that they reduced restriction on the inlet side of the carbs a bit while still preserving the stock "look", the fore-and-aft carb support and the weather protection lost with pod/uni conversions. It ran very nicely; I'm sure I'd still have them if I hadn't done the Ninja carb transplant thing.