i have a 454 block. mark IV block. i do know i am going to do an eagle rotating assy, miliodon pan, aluminum water pump, brodix or edelbrock heads. and ill lighten up the valvetrain, with an edelbrock rpm air gap and 750 carb. i was going to do a 496 but than desided against it when my cam builder told me that he could do a cam that will do 625 hp and 650 lbs or torque. he told me my bell housing will be toast and my trans driveshaft and rear. this is in a 69 nova that has a 11 inch bellhousing with a muncie m-21 trans and a stock driveshaft with a 8.5 10 bolt rear with upgraded axles. so i desided to do a modern version of the classic 427 L-88. i was thinking make it look like it but with modern parts and make it revv to 6000 or 6500. what do you guys think? thanks al.