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April 21, 2018 at 8:41 pm
#13612

Participant
I believe it had to be done at Fisher. All the clutch linkage mounting holes and firewall would be the same between 3 and 4 speed but going buy the IBM code, both have there own code on the Fisher cowl tag. The only difference in the body between the two is the floor hump. If Oldsmobile was doing it I do not believe it would have been on the cowl tag.