Replacing Fresh Water Strap

Hi,
My VW Clubman GL fresh water tank needs a new strap as the old one is rusty and apparently dangerous to drive with if the tank is filled.
Does anyone have any advice about which strap I need to buy and what the easiest way to replace it would be?

Thanks 
Clare

You might find something from Caktanks, item UTMK or UTS here?

http://www.caktanks.co.uk/files/cak_catalogue_2012/2012_CAK_Water%20Tanks.pdf

Thanks Peter,
Will give it a look. 

if you do this yourself, put the new strap(s) in place loosely before removing the rusty straps.
You will need to get underneath to do this.  I doubt it would take a garage mechanic more than half an hour to fit.  That would be my choice.,
Keith

Might be an easy job. It more likely that because water gets trapped twixt tank and strap rusted underneath, all thats needed is a fresh length of metal of the same size  to be welded to the vertical parts. It 14 years since I sold my Clubman and I cannot recall how the straps were fixed to the chassis . Its the ends are the fiddly bits as they have to be asjustable to pull the tank up against the floor.

Have a look underneath  I would look if is possible to support the tank underneath with large piece of ply supported with a jack holding  the tank in place then remove 0ne  strap and replace  ,repeat on second strap , hopefully  this method  would not disturb the pipes or wiring.. it is possible that modern straps  are made from a rustproof plastic material  ,