Nice pics, isn't it ture that the reno P-51's are refitted with turboporops and have 6 blade propellers????

That whistling sound is the air over the gun ports on the Mustang.

In the event, many tests (including some in recent years) have shown the "laminar flow" wing was not developed on the Mustang wing & that the drag was probably no less than that of conventional wings of the same thickness and taper ratio. 
Aeroplane Monthly May 99

P.S.  Beauty is in the eye of the beholder.  Oh, and nice pics Pippin.

One Pilot's Initial Reaction To The P-47 Introduction

One day in January 1943 General Hunter, the Commander of the 8th Fighter Command, came to visit us at Debden. He said he had a 'surprise' for us we were soon to re-equip with the very latest American fighter, the P-47 Thunderbolt. As he spoke we heard an unusual engine note outside and one of the new fighters landed and taxied up beside one of our Spitfires. We went outside to look it over. It was huge: the wing tip of the P-47 came higher than the cockpit of the Spitfire. When we strapped into a Spitfire we felt snug and part of the aircraft; the Thunderbolt cockpit, on the other hand, was so large that we felt if we slipped off the Goddamned seat we would break a leg! We were horrified at the thought of going to war in such a machine: we had enough trouble with the Focke Wulfs 190's in our nimble Spitfire Vs; now this lumbering seven-ton monster seemed infinitely worse, a true 'air inferiority fighter'. Initial mock dog-fights between Thunderbolts and Spitfires seemed to confirm these feelings; we lost four Thunderbolt pilots in rapid succession, spinning in from low level while trying to match Spitfires in turns. In the end our headquarters issued an order banning mock dog fighting in Thunderbolts below 8,000 feet.

Gradually, however, we learnt how to fight in the Thunderbolt. At high altitude she was a 'hot ship' and very fast in the dive; the technique was not to 'mix it' with the enemy but to pounce on him from above, make one quick pass and get back up to altitude; if anyone tried to escape from a Thunderbolt by diving, we had him cold. Even more important, at last we had a fighter with the range to penetrate deeply into enemy territory--where the action was. So, reluctantly, we had to give up our beautiful little Spitfires and convert to the new juggernauts. The war was moving on and we had to move with it.

The change to the Thunderbolt might have been necessary militarily, but my heart remained with the Spitfire. Even now, thirty years after I flew them on operations, the mere sound or sight of a Spitfire brings me a deep feeling of nostalgia and many pleasant memories. She was such a gentle little aeroplane, without a trace of viciousness. She was a dream to handle in the air. I feel genuinely sorry for the modern fighter pilot who has never had the chance to get his hands on a Spitfire; he will never know what real flying was like.
http://www.aviation-history.com/republic/p47.html