[Rjel]

In short, the P-51H is already being worked on, better means superior, and Rjel, come off it. You know we don't agree, so shut it. For all of you asking for performance improvement proof. I read somewhere, from a legitimate source, not Wiki, that the late Mustang IVa, the Brit re-named P-51K, in this case, Block 10, had a top speed of around 442-445mph at altitude as compared to the D's 437-440mph at altitude, so hah... I just can't find the link right now, so sorry...

Ouch. hock: lol
You can do better than that. You were the one who claimed to be the expert. If you didn't want opinions why put up a poll? Make your K man. I couldn't care less. But until we see definitive proof and I mean from sources with actual USAAF tests saying that it was a definite improvement (five MPH ain't much) you'll have a hard time convincing many here. But have at it.