What dipstick and tube will work?

That's one cool truck. I think you are on the right track with your last comment.

I'm building a '57 Dodge D100 for a buddy with a shortend 1994 Second Gen Dakota Frame and am wondering about having to cut the firewall and floor pan to fit the engine & trans. What year chassis did you use? Can you post any pictures of the engine installed. Confirm you are using the mid-block motor mounts? Which transmission is that?