I did this to mine. Aside from some great performance improvements, it made a huge difference with the air flow into the engine bay. 
You should look at the high temp shielding for the wiring harness that Brendan is using on his car. Would also remove any rubber hose and replace with aluminium where possible. 
If all else fails, put a V6 in it!

Enjoyed the video Glenn. Makes me want to have a go at Bathurst myself.
 
With the doors you have fitted who made them, how light are they and are they true all carbon or just fibreglass with a carbon fibre looks layer?

My oem gutted door with no glass is 12Kg. These are 5Kg. They are carbon fibre outer with fibre glass inner. I also have Polycarbonate windows, which helps with weight too. There was a bit of mucking around to fit them though the quality of the doors is very good.

Www.carbenfibrecreations.co.uk

They look great Glenn. Do you use window regulators and have window functions on these doors and polycarbonate windows?

Passenger side is fixed closed. I need to figure out a lightweight way to open and close the drivers side. The regulator will disappear when I put the drivers door on.

Looks great Glenn. Great driving at MWPC. Was great to finally turn some laps together even though I choked when you arrived for our 'roll racing' run.

Yeah that was fun! I'll upload a video of it to my YouTube channel in the next couple of days. Your car sounds awesome!!

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Yeah that was fun! I'll upload a video of it to my YouTube channel in the next couple of days. Your car sounds awesome!!

I so wish I didn't come of the track at turn 10, it would have been a blast having that race. There will be more days in 2018! 
I checked NAtsoft. Almost a 6! Very cool.