Well just picked up a th400,that I got a killer deal on!..what flywheel will I need to run to bolt up?I have the flat one without spacer..when I go to buy my converter,do I just get it for the th400?..also it looks like only 5 bolts will work,bolting the bell housing to the block..the th400 doesn't have the very top one..and the bolt isn't tapped for the one just to the right on the block..