Bigger Intercoolers is a MUST for racers.
In general flashed to 1200hp Porsches rans like a champs

 

Your question about your severe heat temps is a good and serious one. While I don't drive in that kind of temperatures I do track my car when it is 106F ambient temp. My tuner gave me good advice so I'd like to pass it on for you to consider - and from which I speak from experience with my car.

1. Larger intercoolers for sure (I have AWE)
2. Water wetter in your coolant is a must
3. Use Motul oil (e.g. 300V Competion 15W50) - no worries with your car and you can do some research to verify this is one of the excellent oils you can use to replace Mobile and is engineered for the heat
4. Check you intakes (e.g. front under bumper) to make sure they are always clear.

I hope this helps. It's important to take heat issues seriously but your car is well built for the heat and cold but could definitely benefit from the above given your very extreme conditions.
Good luck and keep us posted.
K