Focus of that age is valued at approx 3k - 3.5k
Its just like if you took it to a garage they wouldnt pay extra for the mods
But yewah it is very nice and is worth more than 3.5k
Ideally i wanted a standard one but theres no point now because id loose money on my car and also in a year ill be making a decent enough wage if i get this job im after to buy a MK3 Mondeo or maybe even a newish bmw, but insurance would be higher on the BMW.
My opinion is this car looks great and is worth about 4k in most peoples eyes. I personally think you should keep it, i would be proud to own that car karl!