Hi Chas,
Against all the odds i got the motor stripped and running last night! I will post a couple of pictures of how it was (the C5 in question was found in a bog!). I managed to find some motor bearings to replace the wrecked ones. I have got some gearbox bearings from a supplier i know from work. Only thing is the outer belt drive looks quite brittle so I will have to see how it goes. I will email the guy on eBay though as it has just ended without bids.