Anyone know of a large diameter coolant solenoid?

[sans-pareil]

Hello everyone,

I've been running a VEMS on my Citroen CX with the help of DP-engineering for years now, and I've decided to make some more modifications. I want control over the thermostat from the VEMS, so I'm looking for a fairly large diameter hot coolant resistant solenoid, preferably something I can get from a wrecker's yard. The fan is already VEMS controlled ofcourse.

If anyone knows of a suitable solenoid, I'd love to hear it. Can't find anything on e-bay.