Looking for more 408 pull at the big end?

I have the same issue with my 408, I'm running out of camshaft. The cam I wanted was the Hughes
HUG SER5054ALN-10.
My engine builder convinced me to go with a much smaller cam and I am at max power @ 5500. I lost 40 HP and 50LB TQ from my first cam. Both builds were done on the dyno.
Now you have some background, I am running Eddy heads, stock out of the box. I wanted to do the Hughes CNC port job, but once again my engine builder told me they did it once and the finished numbers were not worth the cost. I have since fired my engine builder and am going to pull the motor at the end of next season an install a set of indy heads.