Philip: Changing the engine mounts is a very simpel operation which you should be able to do yourself if you have a set of spanners. If you are not able to do such a simple mechanical task your self, having a 40 years old Bagheera will give you some trouble.
Trouble no - challenges yes! Challenges are one of the gifts of life!
While I tend to agree with you that an engine mount is one of the easier parts to do, you will be playing around with the complete drivetrain which is a heavy component. It always takes a bit of carefullness to avoid running into trouble.
Phillip have you tried contacting Frederik Moes? If you can't get hold of him, drop me an e-mail.
/Anders