The 4 bolts are in a perfect square and are 3 3/8"" apart (center to center).
The master cylinder is 1"" bore and the ports measure 9/16"" and 1/2"" on each side.
Replace Part Number: CNCB70008
Package Include: 1 Set 8" Dual Power Booster
Note: Please check the appearance and part number of the product before placing the order to confirm that it is suitable for your car, thank you;Warranty for 24 Months.