EG9 K20A3 3/23/2012Nope, you also have to buy other stuff.
This was my approach since i bought them surplus, a lot easier actually and cheaper. If you want something with about stock performance why not stay oem? You'll be paying an arm and a leg by going completely aftermarket and I doubt you would find an aftermarket kit that isn't race oriented.
In your case you can also try this
Source: I did the same on my EG Civic.
EG9 K20A3 3/28/2012Not really, you just need the brakes, reason why i also got the trailing arm with the brakes is for the ease of installation. All i did was disconnect the brake lines, dropped it and installed the new one.