My Duster was about the same. I clamped it and welded it then seam sealer. Done. Some people over think everything, Not saying anybody is wrong. Just saying
Not mine, Mopar A body rally instrument cluster - auto parts - by owner -... (craigslist.org) I was considering buying it but I have 2 already. Might work for you.
Dont tighten the lower control arm pivots until car is on the ground with all the weight on the front suspension, I set ride height before also. If you tighten them with suspension hanging when you set it down it will destroy your lower control arm bushings.