Fishmen,
You couldn't have run into too many 1965 Chevy 'II' Nova SS {327/300 HP}
shoe-box packages.
There were only '319' built'.
Transmission and Rear-End Gear Packages
* 3-Speed Manual .................... 3.07 '10-Bolt Rear'
* Power-Glide .......................... 3.36 '10-Bolt Rear'
* 4-Speed 'M-20' Wide-Ratio ...... 3.07 '10-Bolt Rear'
* 4-Speed 'M-20' Wide-Ratio ...... 3.55 '10-Bolt Rear'
* 4-Speed 'M-20' Wide-Ratio ...... 3.55 '12-Bolt Rear'
* 4-Speed 'M-21' Close-Ratio ..... 3.73 '12-Bolt Rear'