I have a Wrecked XG and good XF falcon , i wanna know if all the parts including engine would fit the XF please , no stupid answers thankyou

Yes - with issues.

I fitted a complete XG wiring loom into an XF ute.

The engine fits, but you need to use the XG swaybar, engine mounts, etc.

keep in mind the XF is Imperial and XG Metric.
so things like steering boxes need to be swapped too. brake lins can cause issues too.

The radiator and airbox needs to be altered to fit.

and all the little things like recover tank brackets etc need fitting.

Don't forget you also need the Fuel tank and fuel lines and pump wiring. Diff mounts are slightly larger, Hand brake cable mounts are different, Rear Cross member is different, Dash and Heater are different [Larger Pipes on the Heater Core & wiring on the Dash and Cluster] Seat mounts may be different depending on what year XF it is. And it is only the Engine that is Imperial the Car is Metric. It is almost strip it to a shell and start again. T.P.V.M.