Last evening, I discovered something about the P-51D that I hadn't seen before.
Fighting in a furball over an enemy field, ack took off my right wingtip. It was obviously time to egress, so I turn east and head for home. But, I spot an La-7 high above, about 4k behind me. Down he comes. I hit WEP and stay glued to the deck. With half of my wing missing, odds are that I will not be able to kill the Lavochkin. The La-7 closed to within 1.0k and the distance stabilized there. I checked my airspeed.... 410 mph, level on the deck. The range began to open, 2k, then 3k. Finally, I ran out of WEP. However, I was pleased to see my speed only dropped about 7 mph. As I raced for our field at over 400 mph, the La-7 quickly fell behind as the range eventually increased to 5.5k over the 15 mile run. Meanwhile, I called ahead and about 6 Rooks were waiting for the hapless La-7, obliterating him in seconds. I landed without further adventure.
So, should you absolutely, positively need to get gone in your P-51, first rip off a wingtip.

My regards,
Widewing