Would I need anything else besides what comes with this to hook up a basslink to an OEM 94-01 integra CD player?

I have a 94 civic ex with 6 stock speakers (2 tweeters).

 

A amp kit would be a good start. Is this a new or used unit ?

 

http://cgi.ebay.com/Infinity-B...wItem

It's a used unit.

 

Looks like it's got plug-in type speaker level inputs, so unless it comes with the plugs, which it doesn't look like it does, you'll probably need a line out converter to tap into your factory speaker wires... And you'll need some speaker RCA wires, and, as previously stated, you'll need an amp kit for power/ground...