I was quite happy to see the 383 buildup.My Charger's 383 has a MP repro magnum cam,906's,a DP4B with a 4 hole spacer and a 780 Holley.I don't have any dyno specs or timeslips,but it's right there when you step on it!I gotta get the brakes,electrical,and steering sorted out before I try driving it again!