Used on the following machines (may not be a complete list):
Twilight Zone (upper flipper)
Road Show (upper flipper) 
F-14 Tomcat (upper flippers)
Earthahaker (upper flippers)
JJP's Pirates Of The Caribbean (upper flippers)
Wizard Of Oz (upper playfield flippers)
Bally/Williams #FL-11722.
Jersey Jack Pinball #23-2000-00 & 23-002000-00.
It is not recommended that you "tinker" with the balance of flipper power supplied by the original flipper coils. But if you must tempt fate, here is a list of coil numbers and their relative strength going from weakest to strongest:
FL-11753 - Used with short flippers and close shots
FL-11722 - Used for close shots near drop targets
FL-11630 - The standard, most commonly used coil
FL-15411 - Used for long playfield shots
FL-11629 - Used for long shots and high ramps
FL-17636 - Used on STTNG Prototype machines