So I'm getting some extra cash and I'm looking into lowering the lancer. I don't want it to low so that I have to worry about speed bumps, and I'm hoping to get 17's before the summer is over. I know almost nothing about the lowering process, except that I want to go with Tein or Eibach. Here are my questions:

-What is the difference between springs and a coilover kit?
-Which is better to go with?
-What additional parts will I need to buy right away to make sure the car runs ok?
-How much does a usual mechanic charge to install springs or a coilover kit?

Basically I want all there is to know, and I'm sure there are others out there like me who are learning slowly. If I missed anything, tack on any questions or bits of knowledge you already have.

 

- Springs use the OEM dampers (shocks). Coilovers are a complete package - spring and damper (often adjustable).
- Coilovers are better because the dampers are tuned with that spring rate. Changing the spring rate (which lowering springs will) and leaving the OEM dampers is a compromise of control. The flipside is that springs are usually $200-300; coilovers are $1000-3000. You get what you pay for, in this case.
- 4 wheel alignment.
- You may not be able to find a dealer willing to do it, I'm not sure (I've always done them myself - swapping springs is remarkably simple if you have the right equipment). I'd estimate $300 (4 hours of labor), and another $100 or so for the alignment.