273, the good points

B-onefan said

I believe the 8 3/4 could be found behind some of the later 1965 273's, including the 2bbl, 4 speed cars, but it was a optional.
I have seen factory 4 speeds with the 7 1/4 and have been told they started adding the 8 3/4 later in the production run because of the weakness of the 7 1/4.

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Does anyone know how a customer could order a new 1965 or 66 Plymouth or Dodge A-body equipped with an 8 3/4 rear? I read a lot threads saying the 8 3/4 rear was an option, but I have never seen a sales code or that option listed.
I thought for a while perhaps ordering a car with the "trailer towing option" would be the answer. But according to the literature, the trailer tow option is available only with the automatic transmission.
My 65 and two 66 Formula S (Sept 66 and Oct 66 build dates) 4 speed cars all came with the 7 1/4". If warranty was the issue, you'd think by the 66 model year, Chrysler would have made the 8 3/4 rear standard equipment on 273 - 4 speed cars.
The 67 Mopar literature says all 4 speed cars came standard with the 8 3/4, but I'm sure there was a way to order the 8 3/4 with any engine, but how?