N/A to TURBO

How hard would it be to convert the 89-91 N/A 13b to the TurboII motor? Has anyone done it previously?

Also, can the pre s4 turboII be easily converted to the s5 by changing the rotors? Again, has anyone done it?

Thanks

your better off just swapping in the S5 motor, drivetrain, and computer harness stuff... it'll save you time and money