Gimme Me A Brake!

Well, now I’m really confused, but it’s a good confusion! I’ve never had the front wheels off of this car. I have the rear out because I’m putting a 9 inch Ford in it. The original rear is a 7 1/4. It had 9 inch brakes. I figured the front brakes had to be 9 inch. Well with all of this information on this thread, I figured I’d look at the front. It has a 10 x 2 1/2 brake! Anyone ever heard of 10 inch fronts and 9 inch rear’s?
This car looks to be very original. It was a 198, three on the tree. I took it all apart to put a 360 in it.

So now the question is, can I just buy a 10“ x 2 1/2“ drum for a big bolt pattern car?