Did it myself mate, belt, tensioners, pump and coolant, 5-6 hours and about 100 quid all in, if you feel confident in your own ability i'd have a go at it, the 20vt lump is a very easy lump to work on in comparison to many,
But if your not sure personally i'd get some one reputable to do it for you,
no probs mate but i am not that confident to do it myself

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