like the title says, is the edelbrock top end kit any good? im thinking about buying it for the 351w im building for my crown vic. comes with the edelbrock performer rpm heads with 2.02/1.60 valves, rpm air gap intake, doesnt give the exact specs on the cam though. claims to make 400hp and 412 ft lbs at the crank as well. anyone here using this kit? it seems fairly decent to me, but maybe someone could give me some info on their personal experience with it.