The R32 is 5.8 DSG mate The R20 will be more likely 5.5 Manual and 5.4 DSG i expect.
Seening that the mk6 chassis is much like the mk5 then the longitudinally mounted R36 engine would not fit under the mk6's bonnet.
Supercharge - £4k (350bhp)Turbocharge - £10k (400-600bhp)