My car FG XR6 2012 UTE petrol normally aspirated.

I bought a send hand XForce complete, extractors, high flow CAT, and the CAT back from a FG XR6 sedan.

Few of questions:
1. How much work is needed to get the XForce of a sedan to fit a UTE?
2. I believe the extractors and CAT will fit, no mod is required, is this correct?
3. Can I add the extractors and the CAT to the standard cat back system?
4. If this exhaust is fitted would I get ECU alarms?
5. Can these alarms be corrected, or will it only be fixed by a major cost of a tune-up and ECU mods?
6. Factory warranty, is it affected by adding a 2.5” complete exhaust?
7. Is it cost affective?

Any comment would be helpful.
Thanks

1) Ute is live axle and sedan is IRS.
2) Extractors and Cat will fit.
3) Yes
4) More than likely. FG has 2 x O2 sensors and the PCM will pick up the change.
5) Alarms can be corrected.
6) Doubt it will affect warranty.
7) Meaning?