looking at doing this mod.Got a 2.5 nad in my 90 going to put it in my s3 been told to cut the mount off the o/s (drivers side) and weld a 90 mount on i can use everything off my 90 to do the job (clutch cover engine and chassis mounts accelerator pedal fuel filter air filter) but will need a s3 deisel downpipe and clutch plate , also looking at using a tdi heater plug relay but its a job to do!