I am looking at an audi 4000 as my next project car.The plan is to fit it with a aan 20v enigine from an 92 S4.

Is there someone on here that has done this that can give me more info?The car will be a toy/autocross/rallycross car.

1. I want to know is if the 4000 Quattro 5speed transmission is going to be able to handle the +-400hp I hope to get or should I get the S4 transission?

2. What Hp will be safe on stock internals.

3. What kind of modifications to body/engine will be needed to make this work.

That it for any and all info will help
thanks