Welcome to the club!
Not a bad deal... BUT I would be worried that with mods you know about... what has been done or abused, that you may not know about. After market radiator?... hmmm. After market clutch?.... i'm gonna guess that the previous owner wasn't some old lady that only used this car to shuttle back and forth to a place of worship onr day a week... I hope you had this car checked out by somebody independent of the dealer. If not do so now. If nothing else, for you piece of mind.