I called a guy I know who works there and he said there are 2 kits in the works one of which is a 3/5 drop. They said it's looking to be available the end of this year or the beginning of next.
Looking at the pics in the link it looks like it will replace the hot side of the charge pipe up to the factory silencer just after where the BOV is. So where the step down is in the factory charge pipe is will still be there with this kit.