Well I thought I should finally get round to posting some images of my completed project. Not looking to "show this off" more just give some ideas to anyone else with the same car as I dont think I have seen another HRV on here.
OK, so here is the Lilli 7" monunted in to the dash. I included a before and after.
Here is a pic of the PC in custom case under the floor in the boot.
Last but not least, the amplification is done my a small Mutant amp under the passenger seat

This pic was taken with the seat removed.
I have quite few other pics taken during the install if anyone is interested. The screen bezel had to be custom made to fit into the whole left by the old head unit and clock.
Sorry I dont have a picture of it running. Since it has been installed and working, I have been too busy playing with it.
Well that is it, not much compared to some threads, but just wanted to perhaps help anyone else with the same car.
Thanks,
Adam