Anybody got a 39-40 hollander?

I need to find out if a 39 & 40 plymouth steering box are interchangable, can anybody lend a hand with a hollander?

 

According to my Hollanders the 39 and 40 are different. Both are one year only!

 

what about plymouth & dodge, both 1940s? will they interchange....?

 

Nope, 40 plymouth is by its self.

 

Thanks everybody, muchly appreciated, Uzek