Ive had my 2.8i Capri for 22 years now,and restored it twice.
So i can safely say they will rust anywhere thats not plastic or glass
Im guessing your going for a 1.6 or 2.0 Capri ?
If so they are a good engine to work on being as basic as it gets,and no complicated electrics to worry about.
Check out a web forum called Capripower for more info.
Rust is the enemy.Inner sills/outer sills,inner wings/outer wings,rear spring hangers,Floor pans,A posts.Wheel arches. Bonnet,doors and roof !!!
Its worth the effort though