Hey...
Well I guess for the quick lowering job, the above mentioned "coilovers" will do.
If you really want it to handle good, avoid add-on coilovers like the plague. Well, i shouldn't say that. I would recommend inquiring about spring rates and the such. Guys always run Ground Control at the track, and they seem to hold up well.
I just think you should research as much as possible before jumping into anything.
Hell, i would never add sleeved coils to my car. That's my opinion.
If you are set on getting these then go for it. I never had sleeves, I ran Eibach springs for 6 years before i bought JIC coilovers.
There are many guys on this board that will either say yea or nay regarding these coils, i say nay!
Get some springs...Tanabe is a good new spring out!
Chris