Any extra seatbelt mounting holes on a 70 Duster

I am putting three point retractable seatbelts in my 67 Barracuda. I just don't feel like getting my teeth knocked out on the steering wheel. You can buy the plates and bolts from Wesco. I had to move the lower anchor point back toward the rear because the retractor was too big to allow the seat to go back.

I cut out a section of the side with a dremel cutoff wheel, put in the anchor plate with stainless bolts, and welded the section I cut out back on. There was about three layers of metal at that point. Went through a few cutoff wheels. I did the same to mount the upper anchor point (except only one layer of metal). To get the bolts in, I taped a coat hanger to a wrench so I could get it on the nuts behind the metal.