How to modify frame steering plate for 35

[Coupe35]

How well does a steering mount plate from a newer ford fit in a 35 car. I would like to update the steering box in my 35 and would like to know how much work is involved. I have a plate out of a 1940 ford and steering box but it’s hard to tell if it will fit. I know I will have to drill out the rivets that holds the old plate in but will the new plate fit in without drilling new holes. And will the new plate require bending to fit in the 35 frame channel. thanks