http://www.larkspeed.com/

http://www.needforspeed.co.uk/pages/home.asp

http://www.motorsportworld.co.uk/

are some I have used in the past. I got my koni shocks and spings for my rover200 from larkspeed, very good service.

Dont start to spend money on any suspension component until you have carefully considered what you want it to do, the type of driving you will be doing,and how you are going to set it up to do that.

Lowering is all well and good on the track, but youll quickly see the downside of dropping too far on the road. You also risk your driveshafts by dropping too low

I see too many cars that are set up far too hard for the road and end up a shambles because they havent been properly set up.

The easist thing to do - IF you dont have time or inclination to do the setting up (It takes AGES to get right) is to look for the best handling model in the range and do a swap with that - eg for the GTI setup etc. I recently did the same to a wee 924 by dropping in 944 turbo suspension - saved me weeks of setting up and messing about selecting and matching components.

If you do decide to (And I can recommend it) Start from exact manufacturers settings, and then tweak!