Most likely you have leaf springs (I did) (unless somehow someone converted it to a torsion axle long ago).
Your axle and leaf springs may be fine as is. Finding compatible brake parts OR new compatible complete Hubs might be difficult - it was for me. I gave up and converted my '60 Tradewind to a Torsion Axle. It was a "Team Effort" in my case, as I don't know how to Weld (or at least not where I'd trust my life w/my skill). So I had help welding on Mounting Plates, and then did the rest myself.
Anyway, I'm glad I switched.
Post photos - we love photos.
Aluminumbskull with Led Balloon in Drag
Birch Plywood and Aluminum go together like
Peanut Butter and Chocolate