verify production dates to be 100% accurate, but most 97 and newer PCMs use a 2 plug 100 or so pin PCM. Where as most 95-96 if not all use a 1 plug (connector) 65 pin PCM.
That would be your first issue. Secondly, a manual pcm will be missing the pin outs for the can system to your ATX pcm, with out these reference signal pins, you will have no ATX function. That is of course that you are still planning on using an ATX and have not already switched to an MTX.
Further more on top of that, between early 96 and late 96 their are several provision p/n for ATX transmissions referring to federal or California emissions, and ect.
Here is the possible chart/list for PCMs in relation to production date:
Build Date_________Type___________Part No./Replacement Part No.
From - To
9401.1-9409.1 _ RS/GS,5FM/T Cal.____M05293318
9401.1-9409.1 _ RS/GS,5FM/T Fed.____M05293319
9401.1-9409.1 _ A/T (All RS/GS)______M05293319
9409.2-9409.3 _ RS/GS,5FM/T Cal.____M05269641
9409.2-9409.3 _ RS/GS,5FM/T Fed.____M05293322/M04874191
9409.2-9409.3 _ A/T (All RS/GS)______M05269653/MR4874192 RP
9410.1-9506.3 _ RS/GS,5FM/T Cal.____M05269653/M05269729 RP
9410.1-9506.3 _ RS/GS,5FM/T Fed.____M05269656/M04874191 RP
9410.1-9506.3 _ A/T (All RS/GS)______M05269658/M04874192
9507.1-9507.1 _ all exc A/T (cal?)_____M04699062/M04887051 RP
9507.1-9507.1 _ all exc A/T (fed?)_____M04699064/M04887050 RP
9507.2-9508.1 _ all exc A/T (cal?)_____M05269812/M05269905 RP
9507.2-9508.1 _ all exc A/T (fed?)_____M05269813/M04887050 RP
9508.2-9512.1 _ all exc A/T (cal?)_____M05269810/M05269929 RP
9508.2-9512.1 _ all exc A/T (fed?)_____M05269811/M04887050 RP
9512.2-9606.3 _ all exc A/T (cal?)_____M05269862 RP
9512.2-9606.3 _ all exc A/T (fed?)_____M05269905/M04887051 RP
9601.1-9606.3 _ Base A/T (fed.&cal.)__M05269862 RP
9601.1-9606.3 _ Base M/T (fed.&cal.)__M05269905/M04887051 RP
9607.1-9706.3 _ M/T (All RS/GS)______05293013AC
9607.1-9706.3 _ A/T (All RS/GS)______05293014AC
9701.1-9905.3 _ M/T (All RS/GS)______05269833AI/0526833A RP
9701.1-9905.3 _ A/T (All RS/GS)______05269834AI/0526834A RP