Im pretty sure Audi and VW make nothing close to the Gen IV V8's power in that price range.
A 317kw crate engine for $6,000. They're a fantastic engine for the price, with their power and torque curves and still maintaining good fuel economy for their size. Mate them to the transmissions you find in Audi and VW and put them in a car with their dynamics and it would be a very good combination.
Go to VW or Audi and you'd be looking at $20,000+++ and lets face it, why buy a Commodore with an Audi engine if its going to cost the same as an Audi...
Anyway, there is plenty of potential there, just look at the ZR1.