How can you tell the difference: 2.2L/2.0L?

Whats up guys? Hey ive been looking for a motor for fkn ever and guess what; I JUS FOUND ONE! And the guy will sell it to me for $150...he says its outta a '93 B2200...but how do i know?! So i was just wondering if there was a way-when i look at the engine-if i can tell the difference between a 2.0L or 2.2L? Please help me out...thanks guys