I stay with the stock wheels and hubcaps, definately.
If I bought that car with alloys on it, I'd spend the money to get the stock wheels and hubcaps back!
The car has withstood the test of time, and has aged gracefully. It just looks "right" with the stock wheels.
Putting on wheels that were not even invented when that car was on the road takes away that "right" look, in my opinion.