Intake
There is no need to do any cutting at the bottom of the intake.
Take your porting tool, and port out all the ports...There is ALOT of material that can be removed. When you have removed all of the material from the ports polish them.
As for where the Turbo enters the intake take your porting tool, and make that "hump" for the EGR smaller for better flow, and open up where the air splits a bit....when you are done polish that up.
That is all you need to do....no need to cut off the bottom....Lee ran 10's using this method.