Sbp to bbp

Hey fabo, not sure if this is in the right section. But I was wondering if anyone had or knows the part numbers for a complete swap for going from small bolt pattern to big bolt pattern on a 72 Dart. My car still has the sbp upfront with the factory power disks. I was wanting to change the bolt pattern to the 4 1/2” bolt pattern so I could fit the same wheels front and back.

Would anyone have a part number for like A new brake kit that would be a complete conversion for the abody. I know you can use 73 and up a body parts but that’s out of the question. There are none around home, and I have yet to see an abody in the junks and or the craigslist ads.

I’d like a complete bolt in kit. Looking to spend 1000-1500$ if that’s possible.