Usually what you'll find when you open the coilover box are 4 coilovers (assembled if you don't get Teins), a set (2) of height-adjusting wrenches for (duh) height adjustment, and if you got an adjustable set, it will also come with a small tool that you use to adjust the stiffness of the ride.
Pillowball mounts replace stock rubber bushes at the top of the shock/strut tower (where the coilovers bolt onto the car) to give more precise steering and more road feedback. You will sacrifice a little bit of comfort for better road feel with these.
How much do you plan to compete? If you're only going out once every 2 or 3 months, springs and shocks may be more appropriate (unless you have the $$ to spend and want the 16 way dampening ability and ride height control).
I wouldn't call coilovers "nothing fancy, just simple, reliable and to the point" ... because that's just not true. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt='
'> coilovers are about as fancy as they get re: suspension tuning; they are not that simple (compared to a spring/shock combo - no tuning required on your part) since they require your attention to ride height and stiffness, ... in most cases they WILL be reliable, but if you get something in the $2,000-and-over range they will require rebuilds every so often (depending on how often you run them), and I guess you can say they're "to the point", since they're oft. seen as
the ultimate suspension setup to have.
wow, that was long winded.
DSC- agreed, ground control are definately a better manufacturer than most other phony-coilover-makers; don't they use Eibach springs?
edit: spelling