904 and 8 3/4" gasket advice

U probably need a torque converter because the hub is cracked. Kim
I suppose I should've described it differently, because I certainly hope I don't need a new converter! It slowly drips fluid when it's running, and after it shuts off for a couple minutes. I'm talking one small drip maybe every 8-15 seconds? I need to add about a half quart of ATF every 200 miles or so.