I have an A4 1.8Ts motor from a 2000 facelifted B5 chassie, Does anyone know if this engine would drop in a B6 2001+ A4 chassie?

I know the ECU is not the same but it will not be used anyway, the motor I have is a bit tuned but my old B5 chassie is a bit busted.

Any thoughts or ideas would be much apreciated!