NITROUS OXIDE ( nos / n2o ) advice forum

Now that I have sold my old nitrous system I am thinking about a new 5mm one. But I have 1 small problem.
The bottle..
I had a 5lb bottle mounted in the boot of my ST but it got in the way to much when I needed to load the boot.
I did think about mounting it in the passenger footwell but the wife moaned about having it here.
At the end of the day a 5LB bottle is just that little to big to mount in the footwell of the passenger seat.
It would be perfect if there was a shorter bottle so I could mount it across the passenger front seat in front of the seat adjustment bar width ways.
Whats the next size down or even shorter 5lb bottle.

It would be perfect if you could get a spare wheel shaped nitrous bottle. Like the ones you get for LPG.

Our latest kits have a QUICK RELEASE bottle mounting system, so you could quickly & easily remove any size bottle from any location when you need the space for shopping etc.

The next bottle size is 1 Kg .