FG XR6 N/A Worth it?

[Jaxon]

Hello,
been highly recommended to you guys buy of a couple board members here.
As It works out you are around the corner from my work, too easy.

Now I've got a XR6 FG 2008 N/A and I'm after that extra touch.
Not worried about warranty as its run out and I've got over 100,000ks on it.

I've recently put a xr8 air box on it and a K&N filter.
Now all I need is my extractors fitted (pacemaker 4500 purchased from member here) 2.5 inch catback exhaust (what ever doesn't cause a drone)
a flash tune and underdrives fitted.

Is there going to be much benefits from this set up?
What the damage?

Thank you,
Jackson.