yes
they are better than the stock stuff.

for the money, better than replacing the worn out stock stuff with more rubber.

It won't make a OMGZ! kind of difference. but it still ought to be enough to notice.

Just make sure that the kit you're buying actually has the bushing that you want.
I think they sell a "master" kit and it really doesn't have the stuff you need in it. It is almost worth just ordering the exact ones you need as you need them. The kit, if I remember right, came with a bunch of odds and ends that you didn't really need.