If you're in the market for a Red Spider, then it has to be in Alfa Red or Rosso Corsa (if its having re-paint). To be spending £4k, buyers will want that originality and not a matt finish.. Real shame, as lots of good stuff in the Ad and the chrome hopes are a nice touch!
I know this has been sitting on eBay for a long time now!
At this price there are more original cars available and push on a bit more and you could find a V6.
There was a butchered red Spider on the local gumtree site in SA. It had been fitted with a VW 1.8 carb fed motor from a Mk.3 Golf. They'd also attached a Mk.3 Golf front bumper and cut the bonnet to make the headlights rectangular. It was a real mess. From what I can recall it was on the site for ages with no interest.