One final point re oil temps .... I fitted a sump extender and carry 6.5 litres of oil in the sump as a consequence, together with a 19 row oil cooler. Even in 38 DecC ambient temps, oil temp never goes above 115 Dec C. I also like the idea of a deeper sump/increased oil capacity to avoid oil surge ... in the very early days, my race car was a wet sump and after losing 2 cranks with oil surge, we had no option but to go to a dry-sump, but this car is running 290/625R16 slicks so it has "lots" of lateral grip.
Now that I have a Motec dash logger - I'll plug that into the Z and be able to monitor lateral G's which is the best indicator of propensity for oil surge - it also samples oil pressure 200 times per seconds - another good reason for for a modern logger (have used a DL-1 for 10 years, but only a basic system).
So, I also suggest a sump extender but it does mean that oil temps in colder weather require the oil cooler to be partially blocked off (I use an aluminium foil wrapper), or an oil themrostat be used.
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