So due to lack of information on the installation of an electric sls pump I'm thinking I may have to go with a different doner car for a 'heart' for my '82 300TD

I can get my hands on an '85 300TD for parts (i.e. the motor) but what I really need to know is this -

What are the major differences between an '81-84 617 found in a 123 300TD and an '85?

What am I going to have to create on the body/ remove from the motor to make it run properly?

Cheers,
Roger
www.guitarmine.com