increasing the size/capacity of the standard wet sump wont give any power increase, obviously a dry sump set-up will. i believe increases are 5~10hp on a highly tuned motor which is a fair bit really.

what is your actual question?

got some specs of the rest of the motor? what block, crank rods are you using? 7afe based or stroked 4ag? if i wanted to go for a larger capacity build id be using a CYB stroker kit personally