master cylinder

im thinking of getting on of the alum Master Cylinders for my car an i need to know what one of the two is the one i want for my car the car is a 72 dart with a 440 fenderwell headers man vb tranny with a 4k stall 4.56's an front runner tires with 14.50's in the back! Bore Diameter 15/16"
-Displacement: 1.30 cu. in.

-Stroke: 1.42"

-Split: 63% Front / 37% Rear

-For cars up to 2800 lb.
$125.95


OR

Bore Diameter 1 1/32
-Displacement: 1.02 cu. in.

-Stroke: 1.31"

-Split 69% Front / 31% Rear

-For cars up to 2800 lb.
$129.95