This has actually been accomplished by others I've seen (mostly on forums of 4-cyl bikes) where the OEM air box has been damaged beyond repair or removed by the PO and is NLA. Solutions have ranged from re-using the OEM velocity stacks/connecting boots that were in the original air box or adapting PVC piping from the carb intakes to good-quality individual aftermarket filters (like K&N) or to a home-brew plenum constructed from even larger diameter PVC pipe and a single filter. But the bottom line has been that you cannot accomplish the same "cafe racer tabloid look" (AKA empty frame triangle) without a decrease in performance (in the area that the bike will really be used) and a lot of work to even get it drivable in the upper range.JadusMotorcycleParts said:So if it has to go (because the stock SR set up IS butt ugly), why not replace it with a proper filtered intake trumpet rather than just a clamp on filter - you might get back some of the power lost and maybe even (with a wish and a prayer) even get a small gain (up top only)
Maybe a future project to do a 3-D printed air box that looks good?