These cars can go for £15 - 25K when in good working order, depending on model, condition and who is interested. Depending on how much work is needed and what spec is wanted, an engine rebuild can cost upwards of £10K to quite a lot of money. You will need an enthusiast! There is certainly a market for unmolested restoration projects, and several in the UK have sold for well over their estimate at auction.
The car is recorded in the ACOC Vintage Register, albeit with engine 1684, and last heard of in Surrey.