"The noise I mentioned may be more akin to loud fan noise emanating from front of engine area. It comes on under load at around 40 mph and gradually gets noiser as speeds increase. Any ideas on this issue."
This would be your thermostatically clutched engine fan. It should only come on if your engine is running hot. Check the air passages through the radiator and A/C condenser fins - they may be bent or blocked with insects and road debris. A reverse power wash with a hose may clear them.