Looks like you got away with a turbo & swirl flaps mate ive seen a good few of these worth scrap value because the swirl flap fuck's the piston & valve seat if its not missfiring your a lucky lad & with a turbo & swirl flaps done it will last for ever
as ollie says tho got to be really carefull there is only one reason a car like this will be in the auction because when they are good they are brilliant its when they start going wrong they can be nasty! im sure once the car is fixed you wont look back if i can help you pm me again!