These turned up today from C.A.D! Amazing service. Ordered them at 4.30pm yesterday - arrived today! :) Cheapest anywhere on t'internet
So what I've bought are some new Alpine component speakers.
....and an Alpine Power Pack. This ingenious little device plugs straight into the back of my Alpine headunit and boosts the RMS from 18w per channel to 45w. It's a tiny package-size, so I'll be able to hide it away discretely, remove the power lead to the battery and the extra signal cable that I had run to my old amp. I am NOT after some sort of crazy and pointless competition system, I just want increased clarity and a little more meat to power my new components.
Despite Mark advising against it, I read the reviews for this product and almost all of them are very positive about it, even Adam Rayner, editor from Talk-Audio raves about it and it fits the bill with EXACTLY what I am after. A nice discrete system with enough punch to match modern car systems. It's all I need and all I ever want really.
So, I had forgotten what was in the old brackets as I don't really pay much attention to car audio stuff, but for some reason, I'd fitted 13cm Kenwouldn'ts....they were pretty lifeless speakers with little definition.