I how lowering a car will decrease handling?????
ride - yes due to a stiffer spring.

A stiffer spring that lowers the car= Improved downforce
and handling around corners due to lack of roll.

Ive seen a spring heated to lower the car. They lowerd the car like .5 inch
went for a lunch brake and saw the car on the ground + plus it makes the
spring brittle

Cutting a spring will change the spring rate and give it a shitty ride, and not only that its also dangerous too.

both are very ghetto

save your mony and get a eibach prokit