Hello and welcome to SKCC Mac.
Without wishing to point out the obvious have you tried the Covin owners club (
http://www.covin.co.uk)? They also have a Facebook page.
They put in an appearance at Stoneleigh (National Kit Car Show) which has now been moved to August 29th/30th. In the mean time I'd contact them for a) a chat about the ownership "experience", parts availability, do's and don'ts etc, b) sensible prices for certain condition of vehicle and c) they may well know a man, who knows a man, who knows a man that has one for sale.
Club Secretary (CUSEC)Michael Dykes[email protected]Tel:/Fax: 01452 559951
Technical Advisor (FUSEC) Darren Parker [email protected]Tel: 0191 4207248
These clubs tend to be a bit like that!
Good luck and let us know how you get on. I'm sure there will be lots of offers of help from our club should you need it.