Cheers for this Legendswraith,
Have just rung Chris from there, they say that they need to be converted from Cermic to steel, rebuild and the max I'm looking for the repairs in £575 per turbo, that's £1150 to repair the car. The car is not worth the expense of this. I can get hold of a complete Aristo TT engine for £500 - £600 Shipped, but don't have either the money or storage for at least a couple of months.
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if its just a case of changing the bearings then you could press them in and out yourself just find a bearing company they usually have massive stocks and give them the bearing specs as for the turbo impellor i would think ideally it would have to be dynamically balanced and checked for run out etc it just so happens that we have a balancing bay around here i don't know if they can do someting that small though if you decide to give it a go yourself pm me and i will give them a bell and see if its possible if they can do it i would think they would