It is very easy to add this to your existing Logic 7 or HiFi system. You will need:
- Technic harness (unless you don't mind tapping the OEM wires and using your own LOC)
- 500 - 600 Watt mono amp
- Amp wiring kit
The install itself is super easy and can be done by just about anyone. There are plenty of threads documenting such an install.
For those on a budget, I would recommend the Kenwood XR-1S amp which can be picked-up new on eBay for around $220 or even less refurbed or used. I used to run that same amp and have only positive things to say about it. It is small, efficient, and yet very powerful, and it can be tucked away under the trunk floor and won't strain your electrical system.
For not very much more, you can also pick-up a JL XD600/1 and make it an all JL combo!
Whoever buys this, I will offer free email support in getting this sub installed.