Tank is just normal kit one takes about 3.25 litres, the mounting bracket/module is alloy and then powdercoated.
Its on my Nissan Gtst. This is a street car and if I drive for say 2000km I use around 1/2 a litre, so reservoir is heaps big enough for my needs. I needed this because car runs on 18psi and has 300rwkw, using the mods I have it was suffering from bad knock. The WMI kit lowered my knock readings from +120 to 10 [so background noise only].
The setup is designed to be modular, so that I can remove/service separate units of the kit. The bottom mount with the motor is also a drip tray with an external drain hose [not shown].
This unit is mounted in the boot.
Apologies to Aquamist.