Slant 6 mod's

Hello all,

So I have a slant 6 225 , what mods can be done from a machine shop to achieve 6=8 +? I have a pair of hooker super comp headers,4 barrel shorty clifford intake, and I do not plan on putting them on, unless the engine is modded to achieve MAX HP and torque, I want to dust one of these rice rockets :burnout: , also what cfm carb is the best for the intake. What MODS can be done to the engine, please feel free to list, Thank you and God Bless, MOPAR 4 LIFE :burnout: