If there's even a little looseness in the motor mounts, you'll get really experienced at changing distributor caps. All it takes is a small amount of torque twist, and the cap will hit the body. If there's less than 1/2" of clearance with the cap installed, get out the BFH and give it a few good whacks before you install the distributor.
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!