Those springs have a progressive spring rate so no cutting you factory springs will not do the same thing because the factory springs have a linear spring rate. Progressive spring rate basically means they get stiffer as they compress more vs a linear spring rate which means the the stiffness of the spring remains constant as it compresses.

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Current: 1975 450SEL, 83 300D, 88 Yugo GVX, 90 300D OM603 swap, 91 F150 4.6 4v swap, 93 190E Sportline LE 3.0L M104 swap, 93 190E Sportline LE Megasquirt, 03 Sprinter, 06 E500 4Matic wagon.