Not sure what you guys think, but for a 5.5 litre v12 the kit engine seems to be a bit out of scale. The pictures of the engine and gearbox provided in the forum are great references. The engine block appears to be a bit too short as it should extend to the fire wall. Otherwise there is nothing for front of the cylinder heads to attach too. The valve covers also appear to be too wide for the length.
The kit gear box also appears to have a lot of surface ribbing that is not on the real gearbox. I think there is a lot of but not insurmoutable work to get to well detailed engine compartment.
Its too bad that Audi is so secretative about the engine installation at this point. Perhaps more information will free up once a next generation car appears.
We can only hope!