Left or right? Got it in a kit. 1991 cummins is my engine.. Right looks like the one that came out of my engine. Left is new version?

 

I don't know, or else I'd assist.
Do you own the Cummins B5.9 shop manual? green in color, about 3" thick? Great investment. I think this'll help you a lot in your build. I have never seen a build such as yours, with the goal of the mighty Cummins going into that car on here since I've been a member. It's probably why you're not getting much responses, as no one has seen this either.
Like I said, if I knew, I'd help.

 

Yeah the Jaguar was offered with a V/12 but putting a 12V in one will be different.
Cool build but nothing I have done before.

As Augie said a Dodge manual will be helpful for the motor rebuild.

 

**** it didn't upload the pics.

i found out anyway, the gasket kit i got for the engine had two different oil cooler gaskets in it.

its the right one for my engine i believe.

 

As soon as DeereCountry reads this tread I'm sure he'll know which model years uses the gasket on the left.