Diesel bell housing?mehcanical clutch rod on hydro assembly?

[pat english]

Ok so I've been searching all morning and cant find a solid answer.is there a difference in diesel and gas bellhousings?
I've read you can convert a mechanical pedal assembly to hydro, but can you go the other way around?not trying to be unique,just trying to use what I have.i found a pedal assembly for $20.it didn't seem right that it was taken apart,but for $20,I figured take a chance.turned out I bought an automatic setup with the brake and clutch pedal thrown in the box.not a big deal.i made it work.
So I'm wondering if it's possible to hook up the mechanical push rod to the hydro pedals?

(Also it looks like they used the pedal assembly for scrap.it had a huge chunk taken out.)