You can run everything in the engine bay.A friend of mine runs his off the windshield washer bottle and just refills that when he needs.With water/meth you can program how much sprays and the size of nozzle.
I had heard of guys using those washer reservoirs for water or water/methanol injection systems years ago. A system such as you've set up seems more adapted to regular street driving rather than a few bursts down a drag strip. The Charger would probably benefit most from a system like yours.
