www.imoc.co.uk

For £500 theres nothing out there thats good and a bolt on. So Id suggest you

a) get a rebuild done and the ct20 should cope with just over 1bar easily.
should be around you budget.

b) Save up for a Turbo Technics Hybrid ct26 good for 300+bhp for £699 + vat

If its just seal or bearings then http://cgi.ebay.co.uk/Toyota-CT20-CT26-MAJOR-turbo-repair-kit-Supra-Celica-MR_W0QQitemZ180103958173QQihZ008QQcategoryZ10428QQrdZ1QQssPageNameZWD1VQQcmdZViewItem as you dont need to rebalane the shaft. if its shaft or inducer exducer you will need to send away to reb...