Right now im planning on getting a 396 put into the car supposedly it will make 540 hp and 528 TQ. My only problem is finding a 4, 6, or 5 speed transmission that will work. And i dont have a rear end yet so would i have to wait for that ratio too. I personally dont really understand the ratios...

Please, what was the stock rear end gear ratio mated to th ls4 454 in the 1974 super sport? Was the tranny a th400 with this engine?