help with '99 LR Disco II rear sub install

[deepsessions]

hello all I am trying to research the power raiting for the rear subs. Can anyone here tell me how many watts the rear subs are getting from the factory amp? I have combed the archives with no luck

I am in a pickle between getting a single 10" powered sub (Infiniti Bass Links) or using an existing 300 watt amp to power a cheaper single 10" sub

I want to keep as much stock as possible in terms of splicing into stock wiring harness'

I found a write up here but this is for a Disco I with the amp attached to the rear sub

http://home.twcny.rr.com/eeibooks/rover/discosubs.htm

any help is appreciated!
thanks

[Life's Lemon]

The setup in the back of my P38 is a single 10" a/d/s/ sub. Of corse I have an entire DLS system including this amp: http://www.dls.se/english/fstark/a7n.htm
Heres some pics: