I don't understand what the problem is with a '39 column in a 35. I have done three of these swaps in years in years agone by, my '36 coupe, my brothers '36 pickup and a '37 pickup that I built in the mid '60's.
I used column shift columns with the '40 column drop because of the transmissions I used. I did have a little problem with the bolts for the column drop aligning with the dash, solved that problem by loosening the column drop and sliding it on the tube about a quarter inch. Had to remove the lock collar on the steering shaft.. ( don't need that anyway, it is just a problem item.)
I bent the lower edge of the dash about one quarter inch with an adjustable wrench which allowed the bolts to clear into the column drop.
The tube did not require any cutting, the fit was perfect. The trans shift levers cleared the firewall perfectly, just as if Henry Ford had intended it to be that way.