So, I ended up buying this and it's sat in the corner of my yard for the last 6 months. Decided to actually repair it this week.
6 valves, 6 guides, belt kit, water pump and 4 new injectors and she's running like a beaut.
76mpg average in the half tank of fuel it had, flew through its mot too...
Lovely bargain for less than £600 including the rebuild.
now means I can concentrate more on the supercharged one and get the 20vt one finished.