67 W200 Which motor would you use?

I like the big walk out deck that someone added to the rear. That thing must weigh 200 pounds. 3/16" diamond plate with 3" channel frame. A little body work, disc brake converson in front, replace all the seals and gaskets that
have dried up and are leaking and she will be a sweet ride. Hopefully I can get started on it this winter.
TAILGATE PARTY,his house!.......