It's attached to a Slant Six. I'm no expert but I have no idea what it is...
Yup. NP435. Pretty easy to adapt to Ford, Chevy, Jeep, and Mopar since it was used by all of them. IH even used them for a while.
Heavy duty, granny low. Check for a tag on one of the bolts with an ID number like 435D or 435L. The letter will tell you ratios.
https://www.novak-adapt.com/knowledge/transmissions/manual/np435/
Anybody know if the input shaft was the same between all applications? Or is it as simple as swapping the bellhousing?
Edit: never mind, the link above posted by Curtis explains that there are different diameter and splines on the input shafts.
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