I checked out the FPC and it seems hard to figure out what was used for what? Could it have been mentioned in a Technical Service Bullentin, TSB?
Someway the workers at the assembly line must have had a order to get the right door knobs for each car.
I have checked through the sales material I have collected but it doesn't say what door knob that were used or if chrome door knob was an option. Neither did I find that chromed door knobs was part of a Group 326 or 327!
Well, some one might chim in with more input.
Thanks Martythetrimmer! That was a good one.