I don't know about all of the track rules in other places but here you are required to have the plumbed system with nozzles aimed at the carb, inside aimed at the drivers lower foot well and covering his legs, and now at the fuel cell. You can also carry the bottles like I had but without the plumbed system, they won't get past inspection at the track. Also in a wreck on the track the driver is kept away from the car so the safety crews which do have big hand held ones can get to it.
From a street stand point the plumed ones don't really justify the expense in my opinion.
Ron
