Which blower motor in '99 GP?

[SnowDrift]

When I looked on Rock Auto, I see there are two different AC Delco blower motors listed. Is there really a difference for a '99 GP? I do have the electronic digital controls, in case that makes a difference. I noticed one has "c60" and "c67" in the description, but I wasn't certain if those refer to RPO codes or not. The aftermarket listings don't offer the ability to differentiate between options.

[SnowDrift]

Any guesses?