My First Mopar- 1966 Barracuda project

From the looks of it you’re using 73 - 76 A body disc brakes.

It looks like you put the left spindle on the passenger side and the right on the driver’s side. This would set you up for front calipers, but to add insult to injury you put the left caliper on the passenger side and the right caliper on the drivers side.
Pull it apart and swap everything side to side . This is supposed to be rear caliper set up .

How’s that go …. Doo !