Take the housings off and measure the wheels. Measure the small diameter of the intake wheel in mm. (the part that you can see with the comp. housing on), the largest diameter of the exhaust wheel (in mm.), and the opening where the down pipe connects in cm. that will give you all the info you need on this turbo. I bet it's a biggn' though because I have a garret with the .95 A/R and it is a monster.