I used 3"x1.5" 1/8" thick. I cut the rear to slide up over the subframe and on the front I welded a piece of flat bar to the connector to give a better weld area on the front.
Here is the connector cut.
View attachment 1714650174
Here is the rear slid up on and welded.
View attachment 1714650175
Here is the front.
View attachment 1714650176
