I am considering replacing the stock air box on my 2003 Connie with individual K&N air filters, the washable type that last for many miles. Should there be a velocity stack mated to the filter before being attached to the carbs? Would I need to rejet? Would a foam filter be better, one that is oiled to trap fine dust particles & block water? What about the crankcase breather hose that goes into the airbox, would I need some kind of catch can or filter? I just pulled my carbs & did a cleaning of all the jets & orifices in the carb bodies & when reinstalling the carbs it was a BIG pain getting the air box boots back onto the carbs (I knew it was going to be though). Years ago I had a KZ1100 touring bike & I traded the stock air box with K&N filters & I could pull & reinstall the carbs with ease when required. Those filters fit directly onto each carb with no velocity stack & it seemed to run great, I also had a Stage 1 kit in the carbs. Is there anything else I should consider before doing this?