Herrod upgrades for AU's

[b2tf]

Hey guys,

just chasing a little more info on some of the upgrades that Herrod did for AU's. Im looking into this for a mate who is considering purchasing an XR8 ute with the following Herrod goodies:

Unichip
330mm brake upgrade
suspension (not sure how much lower it is)
exhaust
headers
70mm Tickford intake


Just wondering if anybody can shed some light on how these mods affect the car i.e. what kind of gains can be expected etc. I know its difficult to tell without dynoing the actual car, but Im just after ballpark ideas as to what he can expect.
I know he is also thinking about taking the Unichip out, would this be wise? Ive driven a few Windsors but never one with a Unichip, and while the settings and tune vary from car to car, would it make that much difference? He is thinking maybe insurance and having it tuned for 98RON is not such a good idea given his age.

Any info appreciated!