ah the joys of wheeling a cherocar. not having the 2 bottom bolts in the motor mount turns out is not a good plan.
cut out all of the affected area, both outside and bottom of the unibody completely. replaced all of it with 3/16".
there is also a 3/16" inner plate that is welded to the bottom and the inner part of the unibody that extends from the first steering box bolt all the way to the motor mount. also added a 3/16" stiffener that runs all the way down the bottom to the LCA mount. and is tied in to the rest of the HD offroad frame stiffener