Any difference in an 87 and 89 MAF Relay?

[enRo]

I just picked up the $10 part at Autozone, but it doesn't fit the MAF Relay extension. My wiring is long-ways and the relay I got is a round one with a round connection, thus it will not fit. Did I get the wrong one? Where the 87's and 89's different? (This one is for a 350TPI)

[enRo]

NVM the 87 and 89 relays are different. By accident, I gave them my Pro/Am's year instead of my other cars year