IMFURYS said

It's been confusing reading up on what rear axle were used in 1969.
Here's what I read about the 741 case: "1-3/8" small stem pinion (aka. '741')
Carrier casting numbers: 1820657 (1957-1964), 2070741 (1964-1972).
This assembly was typically used in low weight/low horsepower applications through low weight/medium horsepower and high weight/low horsepower applications."

I've read that both the 742 and 489 rear axles were more desired than the 741.

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IMFURYS said

I thought so too, but I printed out a copy of a sales brochure from 1969 lists the front sway bar as an option, unless you got a 340, 383 or a trailer towing package. However, it looks like you could order the heavy duty suspension package on any model. As written in the brochure:

"Suspension, heavy duty-std with 340 and 383 engs, and trailer towing packages. Includes H.D. torsion bars, H.D rear springs, and , and front anti-sway bar. (H.D. shock absorbers are avail. with this option)."

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