Cadillac Repair: frozen distrubator, rust buster, fleetwood

Question
My 1970 Fleetwood with a 472 V8 has a stuck or frozen distributor. I have a replacement what would be the best way to get it out ?

Answer
Buy yourself a spray can of RUST BUSTER or similar product and soak the area where the distributor inserts into the engine block and let it soak over night. The next day you may have to use a small brass drift punch and tap the distributor back and forth to unstick it.