Hi Dan,
You might have a couple of options here.
1. Grind a curved depression out of the Torana crossmenber (as stated by other chaps) where the pully touches (seen it done).
2. May be able to tilt the motor back.
I did not have the problem, but my motor tilts back a couple of degree's, not a problem for EFI but might not be best for carbi motors.
Use the old mounts. The new
oil filled mounts are very high and you will not fit the engine under the bonnet.
Onlt thing I'm not sure about is will you need engineers certificate for the grinding?