I wouldn't recommend running a knock sensor on a 2.8. I spent mucho time trying to get it to work, and finally did, but the valve train is so loud that the setup continued to retard under false knock constantly and wasn't worth the trouble at all.
I would say a base install is:
7730 Install Repinning
Modify existing ecm tray
Ecm fan control
Factory cruise will work with 7730
If all items are supplied by you, along with the car, just labor and tuning costs will apply.
Dis would be an option and would be extra,
Digital cruise would be extra,
Fresh baked brownies (no nuts) Will warrant a discount and extra attention to detail
Raydar, I'll keep my eyes open for an 8 cyl knock cyborg thingy