Yes sir I got the 2.8 tiptronic it's from a passat, I'm hoping it will all work electronically, I bought the ecu for it as well. I don't know anything about aftermarket eng. management.
I'm also hoping it will hold up to the V8 I've been told it most likely won't but I'm giving it a try anyway, maybe as long as I don't abuse it.
I think the FWD A8 is rare probably not even in the US, it seems most people can't find one. Maybe because of the transmission problems? It seems they even break on the a6's.
I was reading on making it stronger but there's no info out there. All I can find is replacing the reverse/Ddrum with an aftermarket one that uses slightly thicker aluminum.
Edit:
You responded to my other thread I just noticed, yeah that's me but I don't think anyone on there knows anything about it.
I don't think I'd be able to use the 5hp24 anyway as that was the only thing wrong with the car. None of the gears works except reverse lol
I was waiting to see if I can learn a bit more before tearing the car apart but I ended up removing the exhaust, driveshaft, front bumper so far. Should only need to remove a few cables now when I'm ready for it. I'm trying to see how the darn center console comes apart.