2001 F150 8.8 in rear - need disc brakes that will fit in a 15 in rim

Hello. I have a 2001 F150 8.8 axle and was hoping to use it in a 31 model A sedan rat rod build due to the 65 in width (need 67in - will get there with spacers.) However, it seems the original disc brakes wont fit in a 15 in rim i already have.
Looking at 8.8 conversion kits - they say dont work with truck axles.
The axles are 31 spline, 33 1/2 and 31 7/8 inches long.

Any help is appreciated. Can I make this axle work with 15 in rims?
thanks