Unfortunately I can't help with the Nytro tank dimensions, but I was able to measure the tank off my Phazer. I could try to describe the dimensions, but will try to post pictures of them instead. The overall height of the tank, including the tubes/fittings on the top and bottom is approximately 15". The mounting bracket is approximately 7" wide, though I'd imagine you could find another way to mount the tank without using it. The tank itself is approximately 5.5" wide (at the seam) and 4.75" thick (5" if using the bracket). The weight of the empty tank is approximately 1lb. 7oz. The tank is made fairly thin-walled aluminum and they have been known to bend/crack if abused. I have heard of a few tanks being fabricated, but haven't seen any available, other than this one that comes with the MPI Supercharger kit for the Phazer. Hope this helps!