Afternoon folks

After working my way up the Ford ladder and now Uni has finished, its time for an S2 Turbo! Just wondering how reliable these can be if taken care of (i.e regular oil changes, letting turbo warm up & cool down) and what they are like on petrol? I've got a mate who has had loads of them so he is gonna check running gear out and I can go over bodywork etc. Anything else to look for? Thing is i've only got a budget of about £1800 so I don't expect too get a show-winner, just hoping for an honest, original RS!!

Cheers for any help