Problem in using Impulse tank, is the lack of seat to go with it. Last time I spoke to them about this was, they had taken a sled to boss seats. They couldn't even be bother to made a seat for them. This was couple years ago thou. Not sure if that's changed now, but since the viper came out the nytro is old news now. The doo/impulse tank holds 10 gallons. I couldn't find spec of the Alpine tank, I bet its the same thou. Least you can still get a seat to fit that tank.