Thank you sir!
After searching to no avail for one of those rare as hens teeth Reflexxion Cowls, I resorted to getting something custom made.
Had a fibreglass cowl moulded and fitted to a regular steel hood and then got it bogged and painted at the panel beaters. I sourced someone in Melbourne to do the work and then got it painted up here in Townsville. Bit of a mission but I think it turned our pretty good
It definitely does it's job with getting that hot air out of the engine bay - temp gauge sticks to 100 now, and the thermo fan never comes on anymore unless I have the AC running and it's a particularly hot day (granted up here in North Queensland it can get mighty hot).
Couple more pics of it.