This thread is awesome! I just picked up a set of Arrington cnc ported eagle heads with the valve size upgraded and new Manley valves, and a 2012 low mike 5.7 block off a member here to get the ball rolling. Planing on quality forged bottom end to handle boost from a Large F1 or maybe even a F2 procharger. Plan on blowing it in through a modified 6.1 intake so I can keep it under the hood. Wanting an 8.?? at 150 plus time slip to frame!! Will be in a purpose built 71 demon.