That car is so old, plan on doing ALOT of work to get it back into shape. I don't care how many miles it has.
Interchange info:
Seats: 1985-1992 work, although you may have to swap your seatbelt receivers
Handles: 1985-1992 work. MK1 (1980-1984) may work, but there are subtle differences.
Your car is a MK2 (Mark Two). They were made from 1985-1992.
Before you do alot of driving, be sure to check the entire suspension (ball joints, struts, shocks, tierods, etc). The early MK2 was notorious for crappy suspension and steering parts.
Beyond that, have fun.