Freddies right - I Love Rovers - they are the best (IMHO) but I have to admit they are a 'little unreliable'. I got through 3 engines and a gearbox and a few clutch cables on mine. It actually cost me about £7000 in repairs over the 3 years I owned it - but I had pretty much sorted out all of the issues by the time I had to sell it. I know head gaskets go frequently on the Turbos - they leak from the front right. Every thing is pretty reliable if you have a good radiator and water pump - the engines hate heat and die if you drive them too hard and too hot!
Gearboxes are a big problem on the 220 Turbos. Get a custom box built with a Quaife diff and go for lower gear ratios for mad acceleration - the Turbo gearing is higher than the standard 220 NASP but I would recommend that the 220 NASP ratios for 4th and 5th and Maestro turbo ratios for 1,2 and 3!