I should start by saying that our cars don't really have a true "coilover" style suspension configuration. The word "coilover" came to be because the "coil" is "over" the shock/strut. With our cars, the coil and shock/strut are seperate from one another. But still, there are several options of "coilovers" available for our cars in the sense that they include both a shock & a spring.

Generally speaking (and this may vary from coilover to coilover) coilovers provide you with height adjustability, preload adjustability, dampening adjustability, rebound adjustability, etc. Again, this varies from coilover to coilover as some coilovers offer considerably more adjustability than others. To my knowledge, there are only two adjustable coilover offerings available for Crossfire's - KW V2's & Ground Control's. Both offer height adjustability, but I am not sure what other adjustments are available on the Ground Control's as I have personally have KW V2's on my SRT-6. I'd honestly probably reccomend the Ground Control's over the KW's as they are a bit less expensive and from what I understand offer the same adjustability features (KW products are a bit on the pricey side). I just got the KW's because they were the only height adjustable coilover available at the time that I sought to purchase a set of coilovers and the Ground Control's ended up coming out about a year or so later. There are also some non-adjustable coilovers available from H&R and Vogtland, which include both shocks/struts & springs but lack adjustability meaning they offer a set drop/dampening/etc. like that of a pair of lowering springs but include properly matched shocks/struts.

It really just depends on what you're looking for in terms of appearance & performance, and of course what your budget is. A simple set of lowering springs will make your car sit a bit nicer and possibly handle a smidge better at a relatively affordable price, but you may find yourself wanting more out of your suspension down the road. Alot of people I know who buy lowering springs ultimately end up buying coilovers later down the road due to wanting a lower stance, more adjustability for track days, etc. Not to mention that if you install lowering springs and retain your OEM shocks/struts, it's only a matter of time before they wear out and blow because they weren't designed to be run with a shorter spring. So if you want my .02.......pinch some pennies and save up for a full coilover setup. You'll be much happier in the long run and if you ever get the itch to go lower or set your car up more aggressively, you'll able to. As the old saying goes.....measure twice, cut once.

I should note that the only reason that I am running coilovers is because I wanted to slam the living bejeezus out of my car and I knew that a simple set of lowering springs would leave much to desired in the low categoy.

This ought to provide you with some perspective.

Here is a Crossfire lowered on what I believe to be Eibach Pro-Kit springs (seem to be a pretty popular lowering spring option on here)



And here is my car on KW V2 coilovers. Mind you, my coilovers are on the lowest possible setting and I have removed the adjustment rings (and some other stuff....lol) to lower them beyond the coilover's "intended" height settings. No wheel gap here



Hope this helps!