no_dice6, I have used Comp Cams 260H, 268H, 270H and 280H, but not any of the Extreme energy cams. If you use the XE-274, let me know how you like it. I am especially interested in the low end torque, since it is advertised as mid-range power. My son has been looking at that cam for his 68' Torino. I trust you will be using a compatible valve spring for the .565 lift? Also check valve to piston clearance. Let me know - Good Luck!
GT-347
www.forddragteam.com