Help With The Brakes!

I don't have Wilwood's but disk brakes are disk brakes. You need a proportioning valve from a disk/drum setup. I take it that your master is for a disk/drum setup. If not you will need a new master that has the bigger resevoir for the disks. You can pick them up at just about any parts store. Ask for a 73 dart with manual disks and rear drums. They are cheap.

Jack