just wondering..........................has anyone had a suspension kit put in thicker sway bar and control arms......................

Also, anyone install the camber kit I have been hearing about(apparently, these cars do not have a camber adjustment....

 

In my very similar Mazda3 I have.
OE front bar but w/HD Racing Beat links, 27mm Racing Beat rear bar w/AWR adjustable links, Koni Yellows all around and the aforementioned rear "camber kit" (SBC in my case.)
Most modern cars do not have a rear camber adjustment, and from what I understand, many do not even have provisions for toe adjustment from the factory either. At least we have that much.
If you are going to do anything, put in the rear upper control arms (the camber kit) and have an alignment done to non-factory stds. I'm currently running 0.0" toe-in and +/-1* neg camber and tire wear is much more even than stock.