i love the fun remarks but for the dumb asses like my self.. split bowl or not i have 12jca pump with a diverter and would like to know if going with a split bowl will help me or not??? be nice please 
As much as I would like to answer you in an adult mature way....Well, I can't.

Simply put, a JC bowl actually has smoother longer transitions and the straightest run to get the water through the pump.
That being said, the only reason to switch to a JG is to have the ability to manipulate where and at what thrust angle the water leaves the pump.
If your hull and set up needs more bow lift (in all honesty, who don't?) to be able to fly the hull and has the HP to sustain the lift without porpoising, then possibly converting to a G style bowl and utilizing a droop or even some wedge may help you, but without more information about how your stuff runs as is, I believe it would be just throwing money around to see if it sticks....

I hope this answers your question.

GT