HELP!! 500E Rear Speaker Removal...?
 

I have a 124 chassis manual but it is not clear or accurate about the 500E rear speaker enclosure removal procedure.

I found that there seems to be a screw/plastic post in the rear of the unit that is holding it down near the sunshade. I was able to lift the sides and front lose so I can see in there and there appears to be two plastic clips and a post going down to the rear shelf. (did see the dual tweeters, kinda cool - almost hate to get rid of them !).I looked under the shelf from the trunk but did not see anything.

Any advice ?

Thanks,