Got a few more hours on the car today. Managed to get the final touches of the battery reloco into place. Went and bought some of the bolts that Tim suggested that cut as you screw them in. Seem to have done the job well.
Last final bits I am waiting for are a couple of 50mm2 cable crimps so that I can get the original battery earth secured to the chassis leg where the battery box was sitting and the new earth to a new earthing point.
With the battery now in the boot I had a quick look about where i woyuld like the filter to sit and it seems that with a half decent 45' angle 4" silicone pipe I can get it a lot further forward.
Got the new headunit in as well, just need to run the cable for the microphone and fit the new facia surround when it finally turns up.
Next on th list is to get the rARB fitted and my new alloys when they turn up this week.