Hi Help Checking Coz's website he has 4 different brake master cylinders ----Centric 300zx brake master cylinder 02/1991-96 1" ----Centric 300zx brake master cylinder1990- 02/1991 17/16" ----Nissan OEM 300zx brake master cylinder 02/1991-96 Z32 ----Nissan OEM 300zx brake master cylinder 1990-02/91 I have a 1991 300zx TT 2+0 import and need to replace or go for a local rebuild. Cost wise I think it is better to buy a new one. Any ideas on size required given we have a 1" and 17/16" mentioned on the website Also any idea on costs of a rebuild? Thanks MIKEA