Estate rear speakers?

[me-tm]

I had the trim off the inside of the tailgate of my estate the other day, and had a look at the speakers.

They're odd, aren't they? 4x6" things. Any straight-forward replacements for them? I've already got some decent Pioneers in the front doors.


Also, any suggestions on how to fit some sort of cargo net into the boot? I'm thinking of putting one down the driver's side, against the wheel arch. I'm just not sure where to get an elasticated bit of net from. A camping shop maybe? I hardly ever have the boot totally full, so something to hold a couple of bags of shopping to stop them spilling all over the shot would be nice.