Looking at the inherent problems (ETM, Drive shafts, autoboxes, electronics) of the S60/80/XC, can we dump in the 850-T5/T5R engine (incl wiring, ECU) into the shell of the newer models ?

The hardest would be making the engine sit on the sub-frame and also the length of the drive shafts which is shorter on the 850. I dont see any problems with the electrical/electronic system.

Has this been done ?