I am looking for a 7 1/4 axle for my more door 64 Valiant, it currently has a 3:23 geared 7 1/4, with a nasty growl to boot. I need to find a axle with the same ratio or better, I don't want to put 2:76 ratio in the car and lose the grunt that the car has. We load the car down and use it to go...