Ditto what RWDPLZ said.
If you want to get the non-ac one, you'll also need to change the heater box (this includes changing the head-unit as well, install control cables etc.) so the non-ac HC can fit in.
The non-ac HC are typically more expensive than the A/C ones (I checked RockAuto and TFS), so if I were you, I'd stick in a new AC HC and call it a day, much simpler than having to mess with the heater box.
For example @ RockAuto:
SPECTRA PREMIUM / COOLING DEPOT Part # 94498 W/ AC -- 30.79$
SPECTRA PREMIUM / COOLING DEPOT Part # 94499 w/o AC -- 81.79 (!!!!!!) (That's one of the largest difference I've seen)
VISTA-PRO Part # 398204 {#8204} w/o AC-Heater Only -- 46.79$
VISTA-PRO Part # 398203 {#8203} w/AC -- 49.79$
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Ben
87 GT / 88 GT
84 Indy #1863