Hurst Cars have one up for sale at £13750 at the moment, its done 47k so still pretty low and looks to have had a rebuild (receipt for £7k build included apparently).
http://www.pistonheads.com/classifie...-360bhp/986427
Yours looks nicer, but dealer cars always go for a bit more. Being realistic, i'd say yours is somewhere around £12k for a private sale i reckon. Lovely scoob though and i'd buy it if i had the money. Probably a good investment....