Kevin, yes, I'll need to decide on the early or late radiator. With the 21-stud flathead, we're planning on an altered '32 style crossmember to mount the motor and transmission, and strengthen the frame. I will use the '34 banjo rear to the Model A width. And a '40 Ford front axle, and '40 Ford juice brakes front and rear. I also have an F-1 steering box, leftover from another project.
So there is lots of flexibility here, but I'd like to stay with the Model A frame.
Thanks for all the guidance here. Very helpful.