S197 suspension in 1967 - 1968?

I recently raced (autocross) against with a guy in a 1968 coupe who apparently had swapped in S197 front suspension. So of course I want to do it (after I buy a 67) - but what about the rest of the suspension, has anyone swapped in the S197 rear set up (4-link, etc.) to a 67-68?
THANKS for your input!

p.s. if this topic is already covered, please steer me to it with links!