3/4 ton frame vs 1/2 ton frame

[nebdrummer]

Ive looked a bit and couldnt find any particulars on what I'm looking for.

I'm helping a friend build a 53 3/4 ton pickup. He just placed the order for Speedways mustang II front kit and it was backordered minus the boxing plates.

He got the boxing plates and noticed they were nothing like the shape of the frame. I dont know why it didnt occour to me sooner knowing that the two frames are different, but how different. How much change is there in the front part of the frame where this M II kit welds up.

I ended up going with a whole new clip. He does not want to.

Anyone have measurements/suggestions/ideas? I'm dreading the worst that this mustang II kit wont work with this 3/4 ton frame.