I have a tank set up for van mounting a porty, i used it with my scorpion, however i now have a TM, and the scorpion as a back up.
They are as used with the Bane system, mount easily in van and just drop hoses into top half which is freshwater, and connect a short length of 2 " hose to lower waste tank.
The waste tank on the machine will only draw about an inch of water in over a period of a days work, thus saving vac motors, also you can remove the filters to increase air flow.
I used this system for a year before i got the tm, only cables would be required to get system up and running.
Dont be silly, the Scorpion isnt for sale so dont ask
Looking in the region of £300
Andrew,
07850 805251 01768 867765 pics to follow