Cooling fan on the hood??

[Bean]

The only real way to have it cool inside the cabin in countries like ours is AC.
The only problem I had is while racing with the footwell getting very hot above the downpipe. This can be sorted woth some heatwrap.
Honestly I doubt any change to try and lower the enginbay temps will have any effect on the cabin as long as you have all the blanking plugs in the firewall fitted.