To be honest mate if you want to run 6x9's I would get an amp, have a look on caraudiosecurity.com they got ones for £30. I would also check that you do actually have speakers in the back pods because I actually didnt have any in there. If thats the case then you can have the 6x9's from the stereo but they will be really lame in comparison to if you get an amp. Most headunits are 4x50watts (not sure if the standard vw ones are the same) so what I did was run my 4 pod speakers off the headunit and amp the 6x9's.