More Filter Or More Phelonic Spacer

I would try an open spacer. You have enough filter. While another inch of flyer wouldn't hurt, I just don't see an HP gain from it.
Did you think about sealing the scoop with a base to seal in the carb. You may need to re-jet after that.

Just Fitted a 4 inch Airhog was going to fit two Threes But Bought a Four Inch m That Will Allow Me To Fit a 2 inch spacer


Dont want to Try too Many Things at One Time , Otherwise I will end up going Backwards