Yep that is true. I'll be finishing up a 65/66 Barracuda rear seat swap in my 65 Dart wagon shortly. The Barracuda folding seat back brackets bolt right to the wagon bracket studs on the lower wheel well and the seat cushion fits perfectly. When the seat back is folded down it lies flat unlike the wagon seat that was in there. I've removed the wagon seat back locking brackets and still have to spot weld the Barracuda brackets in place. Thought I had some pictures but can't find them right now.