I was curious how much bigger are the aftermarket sway bars and what changes it makes to handling and ride quality? I have a S4 vert so i was curious as to the size difference between its sway bars and other models?

 

learn to use the search function. This was covered not very long ago.
but just to be nice.
https://www.rx7club.com/showthread.p...bar+larger+TII

 

Shakes head and sighs...

Stablizer bars... They are called stablizer bars...

Sway bars are for motor homes.