Thanks for the replies !
Its not going well either way. I found another motor which I bought, but its way fatter than the old one, so theres no way to make it fit, plugs a different size too so I have no idea what panda the motor came off.
The old motor was totally shot though and dead, burnt out inside. I would take some pics but the motor literally fell apart as I removed it from the cowling, so there is not much to see.
So due to a terribly tight time schedule I have ordered a universal fit 12" fan. But afterwards began to worry - The Fiat ones are not 2 speed are they ? Or in other words will a universal one burn out or otherwise go bang for some daft reason ?
If its just single speed then in theory the job should be done, and with winter coming up it won't likely need to work to hard anyway but due to a total lack of correct fans which are like gold dust.....not a lot of choice.
And, anyone want a panda fan motor ( a fat one ) ?