Anything special about a 91 318?

Why?
The A500 has a better 1st and 2nd gear ratio for faster acceleration. Less rotating mass. Unless the C body wagon is a 5000 lb tank, the A500 may be durable enough to last awhile if it isn't abused.
I thought all c bodies were 5000# tanks.
This one is a 72 Fury 3 seat woodie wagon