I love those little cars...especially Maxwell Smart's Sunbeam. But truth be told, any one of these old sports cars will be one endless cash-pit. If you still want it, check for rust all over the bottom of everything, doors, rocker, windshield frame. You are bound to find some..in ANY older car. If this helps, think about an older (1970 or earlier Triumph Bonnie or TR6R. They take up much less space, and parts are plentiful and relatively inexpensive. I actually had fun partially restoring a '70 TR6R (Tiger 650). The bike was a total blast to ride too. Not sure about 1980, but most all British motor vehicles prior to the mid-seventies require a few new sets of spanners and sockets to wrench on (Whitworth)
Once I get my finances in order again, I am going to seek out another old-school triumph (or maybe a Norton or BSA)and bring it back to healthy life.