For anyone that has RWD 4age 20v, what did you do about relocating the water supply. I've seen kits online, but what's the feedback from those that have crossed this bridge.

Many thanks

I haven't done this yet on my car (a 16v 4AGE).
I think that the 20v is similar to the 16v.

My plan is to use the standard FWD water pump and feed the output from the radiator into the pump (via a thermostat).
Then feed the outlet from the front of the head to the radiator top.
Somewhere in there, I guess I'll need a header tank.
I think that the heater outlet at the back of the head can be blocked off.
As I say I haven't done this yet, so others might have better ideas.
These links may help:
http://www.toymods.org.au/forums/threads/56815-New-4AGE-20V-RWD-cooling-system-conversion-guide-online
https://www.rollaclub.com/board/topic/14024-sam-qs-20v-rwd-cooling-system-guide/
http://www.billzilla.org/4agstock.htm
http://home.clear.net.nz/pages/phil.bradshaw/Index.htm

Hope this helps.
If I am wrong on anything, please tell me.
I'd be interested to know more about what you are doing

[Edited on 8/8/18 by JonBowden]

[Edited on 8/8/18 by JonBowden]

this looks of interest:
http://www.locostbuilders.co.uk/viewthread.php?tid=149146

Searching this site for 4AGE Cooling will be of use.
I see that Britishtrident has emphasized the need for a thermostat bypass to allow some circulation even when the thermostat is closed