Sounds good except for the Max Wedge port size in the 440 Source heads. That modification will give you nothing but trouble. There isn't a valley pan gasket that fits the larger port size and you can't really port a Victor intake to Max Wedge size so that plan isn't going to work. Stick with the standard port size and you'll have plenty of power.
Yep, they may be able to take the Super Stealth out to max wedge but it isn't going to run any better than a well done standard Stealth head. I've done a lot of testing on both those heads.
