There are two different heights of distributor cap, and corresponding differences in the rotor height. Swapping out both parts might work, but a tall cap with a short rotor wouldn't work. It would be impossible to fit a short cap over the tall rotor.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!