It appears to be the tall cap version, and the year of manufacture interchange listed in the ad also suggests that's the case. The telltale sign is the length of the spring clips that secure the cap- - - - -they're considerably longer on the "tall cap" model. The distributor cap pictured in the ad is definitely the tall version.
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!