preformance

Does anyone have an opinion on the H&R rear sway bar versus the Eibach? Or, in the same price range, does anyone have another brand worth checking out? I'm interested in the best product under $300.00 or so.

i just tested the 0-60 of my 1998 Z3M and it was 4.9 bone stock just with some grippy tires. what is the fastest anybody has ever gotten there 0-60 in a Z3M?

Front strut brace? Pro's and Con's please

Ok I have 02 E46 325ci and I was looking for some upgrades these are the things I'm looking into ANGEL EYES/ HEADLIGHTS, SUPERCHARGER, TURBO, SES, SWAY BAR, EXHAUST SYSTEM/FULL HEADERS, M CHIP/ OR GFORCE PREFORMANCE CHIP, OR BMW PREFORMANCE DOWNLOAD FROM DEALER if you have any advice (brands...