Ford factory radio non-mach + factory sub

Is there a way to add the OEM factory sub to a non mach radio? I have a 2002 Ford Escape and would like to add the factory sub. I know it's not the best but it should fit the need/void. I'm not looking for head pounding/throbbing bass just a little more low-end than what is there. Question are: 1. Is there a way to hook up the factory sub to the non-mach radio (p/n 1c3f-18c815-ab)? 2. Is there a different radio (mach version) which has the same wiring harness as mine but with the sub out? ps. Currently buying aftermarket is out of the question.

Can you give more information please, now i am assuming by non-mach you are refering to an aftermarket radio, how is the radio installed with a harness that plugs into the factory wires or an amplifier was used to drive door speakers. I am assuming that your car at one time had a factory amplifier am i correct?