Need a decent turbo rebuild? Need it done in a hurry?
www.itsturbos.co.uk definitely worth a special mention.
Skyline GTSt (RB25) turbo - they will rebuild with steel internals to get over the limit imposed by the fragile ceramic exhaust impellers for............£375 + VAT.
Now, this price includes collection from your door on one day, rbuild the following day and then delivery back to you. Turnaround time (total from being collected to delivered back) is 48 to 72 hours. Also, they don't just rebuild the turbo, they completely refurbish it and fit new wastegate actuater. What you get back is basically a brand new turbo.
They also do hybrid work which could be useful.