Don't worry, the one I was going to darlington to look at was a silver FE, but the bugger sold it out from under me.
Having spent the last few months looking (and then buying) I'd say the one you're talking about is worth about £2.4k. There are loads around if you look carefully. A well taken care of 20k miler is a much better bet that a tatty 5k miler, as I discovered after spending £60 getting to a dealer with a 'mint' '97 SS (still for sale on autotrader). Mint my arse.
Also, take time to think what mods you'll be doing to her later. A set of termis, goodridge, a full service and new diablos would cost you £1.3k, so if it has all of the above it's going to save you in the long run. That yellow SS looks lovely, and I doubt it'll atract many bidders at that price. He'll probably take £2.5k as the twin headlamp conversion isn't that popular.
There's one on autotrader for £2,095 with an ohlins rear (seems to be up your way), and another for £2,495 (in liverpool I think). They'll be more in a couple of weeks.
If you want me to look at any down south, drop me a u2u or email
ali@bisson.com Good luck,
Ali