Maybe it's just me but I always use chains and cross them when tying down. I am always afraid the straps could become loose in a panic stop. I do like the way your straps hold down the front of the car from bouncing. May get away with straps on the front but the rear chains are for me. Nice Barracuda!!!!!
They let the cars suspension move! I think it makes for less harsh ride back there. They have never came loose on me, even to Carlisle up the awefull I-81!