Quoted from toyotaboy:
For history buffs, Williams' standard playfield length increased from 42" to 46" in 1988. With Pinball 2000, the size is changing from 46" to 43". This makes the Pinball 2000 playfield 1 inch longer than classics such as Firepower, Black Knight, Comet, High Speed, Pin*Bot, and Cyclone among many others
I did not know this - very interesting.