As the title says, i was wondering if it would sound good if i changed the speakers on my car to say something like this:

I have already changed my stereo to a good aftermarket stereo (highest rated in amazon) and my speakers sound fine at about 90% volume, but it isn't as loud or exciting as my dads FX35..

I was worried that changing the speakers on the MINI won't make it sound that much different as the interior parts are very lightweight..

what do you guys recommend? does it sound good with a better speakers or will the shakiness of the interior parts ruin in?