Would it be ok If I was to build a support frame out of 2x4 for the time being? I can easily drill out holes for large bolts.
I think it should be ok. Just make sure that it is tight with NO movement front to rear. Go from the bottom of the plow mount to the rear of the tractor. Again, the front to rear twisting of the front axle needs to be eliminated. Measure twice and cut once.