Just out of curiosity what diff did you put on your M6 now? ALL PARTS FROM 65,000 87 M6 THAT WAS UPGRADED. TRX WHEELS, 3.91 DIFFERENTIAL,STOCK CAMS,SELF LEVELING PUMP,AIR FILTER HOUSING. IF INTERESTED E MAIL OR REACH ME AT 704 554 0506 OR 704 334 3658 AFTER 2PM .JOHN THOMPSON