Reading about the results from porting the Eaton I decided to do it myself. I am going to remove about a 1/4" from the bottom outlet and make those sloted holes a bit bigger. Any suggestions?

 

well before you go hacking it up think about this.
DYNAMIC ported an eaton and was all excited about the gains and it resulted in ZERO gain.
Just making the hole biger may give you something, but there is much more to porting than just enlarging the holes.

Search on NLOC and you'll find the posts regarding Apten's SUCCESS and Dynamics Failure.