Likely from a generator.but the shaft is tapered.
Look for engine numbers stamped into engine housing. Post numbers here or you can search them out.how do I make sure to purchase the right one.
...I think I'm save some time, put it back together, and buy a 6.5 predator from harbor freight...

Yeah and it's the hemi version.
Now you have what everybody else has.
Care to articulate?Sounds like someone's been hitting the hateraid....