Scottie,
I just want to mention that the length of the exhaust is a little on the long side. It is a tuned length which reinforces the mid-rpm range.
You can see how it goes, as is.
If you feel it could use some more oomph in the upper rpms, and you think the lower and mids are plenty strong, you can cut the tail end of the header back a few inches, and that will move the tuning range up the rpm band some. We use 31" header length on the Fireball, and a 14" megaphone, for about 6000 rpm use.