Hey guys, new to the Forum. My Friend, Webby-The-Bear showed me the thread after I told him I wouldn't mind doing an Audi 4.2 V8FSI swap into an omega. Have to say, CG, good doing so far! Andwering most of the queries and questions I had regarding the matter. Hope all is going well for you.
P.S - How're thyings looking on the ECU/management side of things?
Happy spanners guys!
Ecu is combined for auto box and engine, so prety straightforward. Hard part will be integrating the omega systems with it so everything works.

Anything is possible of course, but keeping things simple is key to save costs.
In my limited experience, re the Audi lump, I think you need to look at the car in two halfs, as in the so called marriage on the production line between the body and running gear of the front and rear subframes/engine and box/prop.
Pick your body, then pick your running gear, and marry the two.
But be aware of things like front or rear or all wheel drive, Marque and year of manufacture. Try and keep these as similar as possible.
Audi being front or 4 wheel drive, and omega being rear only. So its likely the entire omega running gear will need to be changed. Doable, I guess, but a lot more work... And of course , time and money.