Initial sizing up of the board, hard drive and heatsinks showed that everything fits almost perfectly, though I obviously wouldn't be able to use the PCI ADSL modem as I was hoping I might be able to, never mind, a USB one was on its way :) The orange wire towards the top of the front panel is for the power LED, which I was hoping to use as either the power or hard drive LED for the PC.

The bit that I was least looking forward to - removing the fansink -

This turned out to be surprisingly easy, I just kind of pulled it. Bye bye warranty :)

The CPU all cleaned up. Note - I didn't use the pliers to remove the heatsink, or to clean it.

A copper sheet that I got for my birthday. Thanks Mummy!

The gutted Amp and most of the other bits I would need. Clock-wise from left: hard drive, hard drive mounting platter (phono stage PCB), Amp front fascia and case, copper sheet, heatsinks, DC-DC converter, mainboard and a few bits and pieces including the foot I had to remove to get the rear right mounting post in - recovered from the amp and cut to size - the small white posts on the amp case in this pic. I had decided that using these plastic posts it would be easier to isolate the board from the case and heatsinks rather than isolate the CPU from the heatsinks. This is VERY dodgy and NOT RECOMMENDED, obviously it would be quite easy to short everything out with a careless touch to the case :-/ (Yes, those are my homemade speakers. B&W base cones dontchaknow.)

The motherboard and heatsinks in their final positions. From this pic you can see that I need to cut the copper to a wide and shallow "T" shape. I used the hammer and a nail to knock dimples (is that the right word?), before drilling, and not out of rage :)

The copper cut to size and shape. I thought I might as well use the waste copper and bend it up in strips to distribute more heat.