The drag kit will reqire that you have a shop put the piping together for you cause what they sell pretty much just comes with the bends you need to install the piping. It needs to be fit to your car/motor.

The drag kit also comes with a larger turbo (T3/T4) and will have a lot more peak hp potential. You will get a faster spool out of the greddy kit, but it's all about what you want. The drag kit does not come with any tuning items either, like an FMU or EMS. The greddy kit comes with the e-manage now (replacing the untunable blue box). The e-manage is a somewhat tunable EMS making the greddy kit more complete.