lowering cavy

hi guys my buddy wants to lower his 2000 z24 convertible but he wants an estimate on how much $ it will cost to lower.. he wants to buy decent springs and have a shop install. any guesses?

How low does he want to go? The lower he wants to go, the more its going to cost him to do it properly.

Coil-overs?
Springs?

The ultimate suspension for J-bodys are the Gravana Coil-over and Tein SS Coil-overs, and both start roughly $1300. Tein SS come with camber top plates and eliminate the terrible rubber mounts which fail on a lot of these cars.

Best struts IMO....

Koni Yellow ( inserts into your stock struts, costly and can handle any drop. Adjustable dampening)
Tokico D-spec ( full replacements, can handle any drop and are adjustable)
KYB AGX ( Are only warrantied up to a drop of 1.5" below stock height, adjustable dampening, some of the best springs out there will keep you in the 1.0-1.4" lowering range, but are far more costly because they are progressive lowering springs)

I was running on my sedan in my sig, KYB AGX struts and Eibach Prokit (1.4"drop around). This has been widely discussed as the BEST bang for your buck and a GREAT ride. This setup ran me $210 for the springs with discount ( they are now around $240, and the struts ran me $120 a piece ($480), brand new strut mounts all around $90 for the fronts and $65 for the rears.

$845 and I installed them myself. Figure a shop is going to charge around 3hrs of labor @$80/hr, so roughly add another $240 onto what he pays.

Do the install yourself, its not hard.

any tutorials on installing yourself?

A haynes manual covers it pretty well. Only special tools you need is a spring compressor, I have done it without one before. But I knew what I was doing, lol.

I've done around 7 of these suspensions now. I am going to be doing another one here real soon too. Swapping the current setup onto my daily driver.

There is also airride, but thats more expensive than Tien SS's. I got a hell of deal on my easystreet kit, but it still cost me $2K.