Building a 406 ci. Never done one before, so I am looking for combo's. Has Dart angle plug heads. Don't know numbers off the top of my head. Looking for 450 to 500 HP. Has dish pistons. Need some info on good cam and lifters. and an intake. Roller or flat tappet cam? Carb size ? Tell me your combo or one that you know to work well. All info will be appreciated. Thanks.