Clutch, two alternators, Lucas electrics, etc. etc.
My Spyder also had electrical problems. As far as corrosion, it was fine when garaged and only driven in nice weather, but the first winter I had to use it started rusting badly.
Then there was the night in winter I left a pack of club soda in it. The bottles exploded shooting a jagged glass top through the ragtop and leaving the interior covered in frozen foam.