I always thought the P-51 just inched the P47 out for fastest WW2 prop fighter.
eight 50 cals would make short work of anything that had the misfortune of finding it's way into the path of a jug. Those german pilots had balls!!!
Some design analysis on the jug, pretty interesting stuff.
http://www.rwebs.net/avhistory/history/p-47d.htm and here are some pics of the valkyrie(not that great)
http://www.photovault.com/Link/Military/AirForce/Aircraft/XB-70Valkyrie.html
