1969 dart 10" drums

Hello I have a 69 dart it has sbp on the front and bbp on the rear. The wheels on the front are attached using spacers. I'm having a hard time figuring out how to convert the front to bbp to eliminate the spacers. I have 10" drums all around, I'm going to replace all the brakes. I'm trying to do this without buying a disc brake conversion kit.

What are my options? Any ideas would be appreciated.

Thanks